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Box and Whisker Plots
供稿人: Dwiggins
(原作者: Moore)

   Before beginning these practice exercises on

 

Box and Whisker plots, please gather the following:

 

        Calculator

        Yesterday's notes

        Pen/Pencil

 

 

Good Luck !

Step 2: Determine the median value of the data:  
Step 3:  Now  use the median to divide the data into 2 groups

Given the following data on ages of children.

10,12,9,7,10,12,6

 

Construct a box and whisker plot.

Step 4:   Median of the lower quartile
Group 1: 
Step 1:  Put the data in order from least to greatest. 

Record  the  values of your  median, lower quartile and upper quartile  to

answer questions on the next slide.

,
,
,
,
,
   Group 2:
,
     Median of the upper quartile
What is the lowest value of the data?
What is the highest value of the data?

 

(Problem continued  from previous slide)

 

data on ages of children.

10,12,9,7,10,12,6

 

Construct a box and whisker plot.

  

Warm Up  Exercises.

 

 subtract the lowest # from the highest #

sum of numbers ÷  number of data

put data in order, find middle value

which ever #(s) that occur the most

How do you find the range of a given set of data?

Use the box and whisker plot to answer the questions.

 

What is the median value of the data?
What is the median of the lower quartile?
20
What is the median of the  upper quartile?
30
38

What is the age of the youngest student?

 

What is the age of the oldest student?

 

What is the range of the data in this diagram?

8

Ages of Students

10
12
14
16
18
What is the median value of Nike Sneakers?
Which brand of sneakers has a  price range of $10?
Reebok
What is the value of the median of the lower quartile for Nike Sneakers?
Nike
32    34       36    38     40      42     44    46      48      50      52
Average Prices of Sneakers

Reebok

 Nike
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