Texas Instruments BA-35 Quick Reference Guide - Page 28

Data Mean, Standard Deviation, Population Deviation, Sample Deviation

Get Texas Instruments BA-35 PDF manuals and user guides
UPC - 033317176960
View all Texas Instruments BA-35 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 28 highlights

Statistics (Continued) Mean 0 z (Data Mean)-Calculates the mean (average) of all the data values currently stored in the statistical registers. If you have entered data points with x and y values, press 0 z to display the mean of the y values; then press w to display the mean of the x values. Standard Deviation The 0 y and 0 x key sequences calculate the standard deviation of the data values in the statistical registers. If you entered data points with x and y values, press 0 y or 0 x to display the standard deviation of the y values; then press w to display the standard deviation of the x values. 0 y ("Population" Deviation)- Calculates the "n weighted" (or "population") standard deviation. 0 x ("Sample" Deviation)-Calculates the "n - 1 weighted" (or "sample") standard deviation. 28

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
28
Statistics
(Continued)
Mean
0
z
(Data Mean)
—Calculates the mean
(average) of all the data values currently stored
in the statistical registers.
If you have entered data points with x and y
values, press
0
z
to display the mean of
the y values; then press
w
to display the
mean of the x values.
Standard Deviation
The
0
y
and
0
x
key sequences
calculate the standard deviation of the data
values in the statistical registers.
If you entered data points with x and y values,
press
0
y
or
0
x
to display the
standard deviation of the y values; then press
w
to display the standard deviation of the x
values.
0
y
(“Population” Deviation)
—
Calculates the “n weighted” (or “population”)
standard deviation.
0
x
(“Sample” Deviation)
—Calculates
the “n - 1 weighted” (or “sample”) standard
deviation.