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Copyright © Lexibook 007
ENGLISH
Your calculator allows you to obtain these results easily by carrying out the
following steps:
• Choose your statistics mode;
• Input the data;
• Check that the value of n corresponds to the number of data that you have
theoretically input.
• Calculate the average and the standard deviation of the sample or the
population.
x
Statistical Function Keys
[MODE] 2
[DT]
[AC]
[SHIFT] [CL]
[SHIFT] [S-VAR] 1
[SHIFT] [S-VAR] 2
[SHIFT] [S-VAR] 3
[SHIFT] [S-SUM] 1
[SHIFT] [S-SUM] 2
[SHIFT][S-SUM] 3
Switches to the one-variable statistics mode.
Initializes all the data in memory.
Memorizes the data entries.
Allows you to edit data input errors before having
pressed [DT].
Allows you to edit data input errors after having
pressed [DT].
Displays the average of x.
Calculates the standard deviation of the popula
-
tion
Calculates the standard deviation of the sample.
Calculates the sum ∑x
of the entered data
squared.
Displays the sum ∑x of the data entered.
Indicates the number of samples input (n), in
other words, the number of data entered.
One variable statistics – Practical example
Practical Example
Benjamin and his friends obtained the following results in their French test:
student A
B
C
D
E
F
G
H
I
J
marks
8
9.5 10
10
10.5 11
13
13.5 14.5 15
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