9-4

is the median of the lower half

is the median of the upper half

Find the first and third quartiles:

17,15, 16, 14, 22, 20, 26, 24, 33

Find the first and third quartiles:

79, 74, 88, 83, 76, 33, 95, 84, 81

Shows the distribution of the data

Create a box and whisker plot for the data:

34, 35, 37, 23, 45, 33, 35, 27, 30, 31, 38

Step 1: Order the data-

25, 27, 30, 31, 33, 34, 35, 35, 37, 38, 45

Step 2: Find the least value, median, 1st quartile, 3rd quartile and greatest value:

Least value: 25

Median: 34

1st quartile: 30

3rd quartile: 37

Greatest value: 45

Create a box-and-whisker plot for the data:

5, 2, 3, 7, 4, 5, 7, 8, 9

Describes how spread out a data set is

rd

3

quartile

st

1

Divides

a set

into

4 equal

parts

quartile

9-4

bjan3

Step 3: Draw a number line and plot the values from above:

Step 4: Draw the box-and-whisker plot: