Statistics

The button pressing sequence for statistics is on pages 12 to 15.

Remember!

∙When you have finished entering the data you must press Cto tell the calculator that you have completed entering the scores.

∙When you press SHIFT14 then 2to bring up the value of the mean you must press pto display the value. This is particularly important when you proceed to find the second piece of information, e.g. the standard deviation.

Practise your statistics skills with the following questions.

1Set your calculator to statistics and turn the frequency list off. A Enter the scores 16, 19, 5, 11, 15, 12 and 9.

B Determine the value of the mean, ( x ) to 2 decimal places.

C What is the value of the standard deviation (σ n ) to 3 decimal places? D Determine the sample standard deviation (σ n−1 ) correct to 3 decimal

places.

2Clear the data in the statistics list. The easiest way to clear the data is to turn the calculator off. Alternatively, set the calculator to comp then back to statistics.

3Set the calculator to statistics with the frequency on.

AEnter the data in the table into the calculator.

Scores

Frequency

5

4

6

9

7

15

8

11

9

7

10

4

BDetermine the size of n, the number of scores.

CWhat is the value of the mean?

DDetermine the size of the standard deviation correct to 3 decimal places.

4Determine the mean and standard deviation of the scores in the following table.

 

Scores

10

11

12

13

14

15

16

 

Frequencies

15

12

5

8

10

13

6

Answers

 

 

 

 

 

 

 

 

1B

x

= 12.43, σ n = 4.338,

σ n−1

= 4.685

3B n = 50

C

x

= 7.4

D σ n = 1.356

4x = 12.7 , σ n = 2.079

© Sue Thomson and Shriro Australia PTY Limited. This page may be photocopied for classroom use.

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Casio FX-82AU PLUS manual Statistics, Button pressing sequence for statistics is on pages 12 to, Scores Frequency
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FX-82AU PLUS specifications

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In summary, the Casio FX-82AU PLUS is more than just a calculator; it is a comprehensive tool that enhances mathematical learning and professional efficiency. Its wide range of functions, natural textbook display, and durable design set it apart as a preferred choice in the scientific calculator category, making it an essential tool for anyone engaged in mathematics or related fields.
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