1. Box Plots
How to create Box Plots

2. Bell Ringer (review: how to calculate median values)
Ashley’s Dress shop posted sales for one week of $874, $1471, $1275, $1078, $993, $471, and $ Find the median sales for the week.

3. Ashley’s Dress shop posted sales for one week of $874, $1471, $1275, $1078, $993, $471, and $ Find the median sales for the week.
Solution:
Step 1: Order the numbers in ascending order
$471 + $874 + $993 + $ $ $1657
Step 2: Since there are 6 numbers, we must add the 3rd and 4th number to calculate the median value.

4. Ashley’s Dress shop weekly median total is $1035.50 dollars.
Step3: Add the 3rd and 4th numbers.
$993 + $1078 = $2071
Step 4: Divide the answer by 2
$2071/2 =
Step 5: Solution
Ashley’s Dress shop weekly median total is $ dollars.

5. Introduction How to create Box Plots
Lesson Objectives Learning Goals - *Calculate and identify the values of the key components of a box plot *Construct and compare multiple data sets using Box Plots

6. Introduction How to create Box Plots
Key Terms
Minimum value
Maximum Value
Range
Median value
Outlier
Lower Quartile (Q1)
Upper Quartile (Q3)
Interquartile Range (IQR)

7. I DO
Given a set of data, Find the Lower, Median, and Upper Quartiles 7, 13, 11, 5, 9, 10, 4, 2 Step 1: Order the data 2, 4, 5, 7, 9, 19, 11, 13 Step 2: Separate the value in two equal groups and label them. 2, 4, 5, 7 11, 13, 11, 19

8. I DO
Given a set of data, Find the Lower, Median, Upper Quartiles and Interquartile Range (IQR) (Q1, M, Q3, and IQR, respectfully) Step 3: Label each group of values Q1: 2, 4, 5, 7 M: 7, 9 Q3: 9, 11, 13, 19 Step 4: Determine the median value for each of the three groups and the Interquartile Range (IQR) Q1 = 4.5 M = 8 Q3 = 10.5 IQR = Q3-Q1 = = 6

9. We Do
Lets try it together using the steps that were outlined Given a set of data 1, 14, 5, 10, 3, 7, 12, 17 Step 1: Order the data in ascending order 1, 3, 5, 7, 10, 12, 14, 17 Step 2: Separate the data into equal groups 1, 3, 5, 7 10, 12, 14, 17

10. We Do
Step 3: Label the groups Q1: 1, 3, 5, 7 M: 7, 10 Q3: 10, 12, 14, 17 Step 4: Determine the median value for each of the three groups and the Interquartile Range (IQR) Q1 = 4 M = 8.5 Q3 = 13 IQR = 9

11. I Do
Using the given data, Create a Box Plot 7, 13, 11, 5, 9, 10, 4, 2 Step 1: Plot the points on a real number line

12. I DO
Using the given data, Find the Q1, M, and Q3 7, 13, 11, 5, 9, 10, 4, 2 Step 2: Q1 = 4.5 M = 8 Q3 = 10.5 IQR = 6 Step 3: Identify the Q1, M, and Q3 values on the number

13. I DO
Step 4: Create the Box Plot

14. We Do
Using the given data, Create a Box Plot 1, 14, 5, 10, 3, 7, 12, 17 Step 1: Plot the points on a real number line

15. We Do
Lets try it together using the steps that were outlined Using the given data, Find the Q1, M, Q3, and IQR 7, 13, 11, 5, 9, 10, 4, 2 Step 2: Q1 = 4 M = 8.5 Q3 = 13 IQR = 9 Step 3: Identify the Q1, M, and Q3 values on the number

16. We Do
Step 4: Create the Box Plot

17. They Do
Try this in your group: Using the given data, Find the Q1, M, Q3, IQR and create a Box Plot 21, 25, 15, 13, 17, 19, 19, 21

18. They Do
Q1 = M = Q3 = IQR = 5

19. Closure
How is a Line plot similiar to a Box plot?