Stem and leaf diagrams

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median time taken Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: 3 4 5 6 7 Completion times stem leaf

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 1

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 1

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 3 1

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 3 1

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 3 1

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 3 1 8

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 3 1 8

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 3 1 8 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 3 7 1 8 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 3 7 1 8 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 3 7 4 1 8 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 3 7 4 1 8 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 3 7 4 1 8 3 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 3 7 4 1 8 3 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 3 7 4 1 8 3 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 3 7 4 8 1 8 3 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 3 7 4 8 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 5 3 7 4 8 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median, quartiles and inter-quartile range Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 5 4 3 7 4 8 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 5 4 3 3 7 4 8 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 5 4 3 3 7 4 8 1 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 7 3 6 6 8 8 1 9 2 5 4 3 5 3 7 4 8 1 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 3 7 4 8 1 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 3 7 4 8 1 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 4 8 1 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 4 8 1 2 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 3 7 4 8 1 2 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2

Example - drawing a stem and leaf Question:- 29 students were set a simple task. Their completion times to the nearest second were: 47 61 53 43 46 46 68 48 72 57 48 54 41 63 49 42 58 65 45 44 43 51 45 38 46 44 52 43 47 (a) set these data into a stem and leaf diagram (b) find the median Answer (a):- (1) key: 4|7 means 47 (2) put values into preliminary diagram: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 (3) re draw diagram with leafs in numerical order:

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3 5

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3 5 8

Example - drawing a stem and leaf Answer (a):- (3) re draw diagram with leafs in numerical order: Completion times 3 4 5 6 7 8 7 3 6 6 8 8 1 9 2 5 4 3 5 6 4 3 7 3 7 4 8 1 2 1 8 3 5 2 Don’t forget the key Completion times 4|7 means 47 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3 5 8 2

Example - drawing a stem and leaf Answer (b):- 4|7 means 47 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3 5 8 2 15th The median is the middle value: There are 29 values i.e. 15th value Median = 47

Example - drawing a stem and leaf Answer (b):- Range = Highest - Lowest 4|7 means 47 Completion times 3 4 5 6 7 8 1 2 3 3 3 4 4 5 5 6 6 6 7 7 8 8 9 1 2 3 4 7 8 1 3 5 8 2 Lowest Highest Range = 72 – 38 = 34