EVERYTHING YOU NEED TO KNOW TO GET A GRADE C STATISTICS (FOUNDATION) AUTHOR

Median is the middle when the numbers are placed in order 25 26 28 30 35 39 29       30.5 Two members of the team of five have names beginning with J  

Mode is the number which occurs most often       = 6 The mean is one higher than the mode

Range = Biggest - Smallest Mode is the number which occurs most often 76 - 16 60 Mode is the number which occurs most often 16 16 still occurs the most

Range = Biggest - Smallest 19 - 8 11       13 The men’s range is 11 and the women’s range is 14. The men’s number of driving lessons taken are more consistent. The men’s mean is 13 and the women’s mean is 9. The men have more lessons on average.

Median is the middle when the numbers are placed in order 200 200 250 350 520 620 800 350       420 Average is for the whole company and not just the mechanic. Mode is the number which occurs most often 200

Median is the middle when the numbers are placed in order 1 1 1 3 4 4 6 20 2       4 Median as it is not distorted by the outlier (20).

Mode is the number which occurs most often Median is the middle when the numbers are placed in order Mode = 1 1 1 2 3 4 Median = 2 5,5 gives 5, 5, 5, 5, 6 Median = mode = 5 6,6 gives 5, 5, 6, 6, 6 Median = mode = 6 5,6 gives 5, 5, 5, 6, 6 Median = mode = 5

1pm     10 Friday – because there were more people waiting on this day. OR Cannot tell – as one set of data for each day is insufficient.

A full pie adds up to 360° £600     4 quarters make a full pie 4 x £600 2400

126° 105° 75° 30° 24° Number blue = of 120 Red Other 1 5 Number blue = Angle in a full pie Total = 120 360° Angle blue   Number blue = of 120 Cancel down Red Other 1 5 Angle in a full pie   Number blue = of 120 8 1 2 0 1 4 White Silver 15 Blue

x x     = 10 = 15 Eels and Pike = 30 – 10 - 15 ÷ ÷ 5

% means ‘out of 100’ Obstacle Egg and Spoon Sack 3 - legged       % means ‘out of 100’ = = 30 108° 120° 72° 60° Total = 60 360° Smallest = 18 Biggest = 54 Therefore, the stem goes from 1 to 5 Angle in a full pie Obstacle 1 8 Egg and Spoon 2 3 9 Sack 3 6 6 9 4 1 3 4 3 - legged 5 4

Median is the middle when the numbers are placed in order     22.1 Range = Biggest - Smallest 59 - 1 58 Count the number of leaves 42 13 62 - 27 Median is the middle when the numbers are placed in order 35 15

Plot midpoint with number of workers 7500 Plot midpoint with number of workers 12500 17500 22500 27500 x   x x x x 18 + 3 = 21 earn over £20000  

Do not need to work out the midpoint as it is an ungrouped table FX CF x 80 10 x 180 28 In this group x 84 35 x 60 39 x 20 40 Total = 40 424     10.60 Modal fee is the one with the highest frequency Modal fee = 10 Median is middle. Add cumulative frequency (CF) column and calculate.     Median = 20.5th term Median fee = 10

Mean = = 13.0 mins (1d.p.) Midpoint FX 3 45 9 225 15 300 21 252 27 216 Total = 80 1038 1038 Mean = = 13.0 mins (1d.p.) 80 (Total 3 marks)