4.2. STANDARD DEVIATION
Press ON/C
0 . 0 0
T A B D E G S T A T
0
S t a t
appears on the screen.
Press
RCL (first key, fifth row) ¯x (first key, seventh row)
2 8 . 5 0
T A B D E G S T A T
N =
appears on the screen.
The mean is 28,50.
4.2 Standard deviation
• Determine the standard deviation of the above data.
Without re-entering the data, press
ON/C RCL sx (second key, seventh row).
The standard deviation is 8,69.
4.3 Linear line
Please note: The calculator takes the a-value as the y-intercept and the b-value as the
slope.
• Determine the equation of a linear line
y = bx + a
Press
MODE 11
appears on the screen.
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