UNIT 10 ReView

UNIT 10 ReView

 Box and Whisker Plot

What is the …..

Minimum (lowest value)

Quartile 1 or Q1 Median,

Quartile 2 or Q2

Quartile 3 or Q3

Maximum (highest value)

IQR

Range

Data Set

• (0,4,5,6,9,10,12)

• First thing 1st: Make sure they organized least to greatest

(0,4,5,6,9,10,12)

• Find the Median

• The median is the value in the middle of the data set

Multiple Choice

What is the median of this data set?

(0,4,5,6,9,10,12)

• 4

• 5

• 6

• 9

The Median is your Quartile 2 or Q2

(0,4,5,6,9,10,12)

6 is Q2.

• Now find Q1

• Quartile 1 or Q1 is the median for the lower half of the data set (every number up to Q2.)

• Do NOT include the median (Q2) when calculating

(0,4,5,6,9,10,12)

This called the lower half.

Q1 is the median of the lower half.

Multiple Choice

(0,4,5,6,9,10,12)

What is Q1

• 0

• 4

• 5

• 1

The Median is your Quartile 1 or Q1

(0,4,5,6,9,10,12)

4 is Q1

• Now Find Q3

• Quartile 3 or Q3 will be the median or the upper half of the data set. Every number after Q2

• Do NOT include the median (Q2) when calculating

(0,4,5,6,9,10,12)

This called the lower half.

Q3 is the median of the lower half.

Multiple Choice

(0,4,5,6,9,10,12)

What is Q3?

• 1

• 9

• 12

• 10

What is the …..

• (0,4,5,6,9,10,12)

  Minimum (lowest value) =0

  Quartile 1 or Q1 Median=4

  Quartile 2 or Q2=6

  Quartile 3 or Q3=10

  Maximum (highest value)=12

  IQR=Q3-Q1=4

  Range=12

Now time to plot

First plot Q1,Q2,Q3, Max and Max

Draw vertical lines

Draw vertical lines for Q1, Q2 / Median and Q3,

Box and whiskers

connect to create the box

Draw the whiskers extending out to the minimum and maximum values

 

On your Own paper use this data set and make a Box and whiskers

5, 6, 7, 9, 10, 10, 15, 18, 20

Write this data set down