6: Statistics Worksheet 95
One-Variable Statistics Example
You randomly select a sample of 10 stores to see how much
they charge for a particular item. You find the following prices:
$63, $69, $71, $69, $74, $74, $72, $66, $74, $76
Note that $69 occurs twice and $74 occurs three times. You can
save time entering by using the frequency factor (
Y
nn
) for
them.
Find the mean and the sample standard deviation.
Example: Entering One-Variable Statistical Data
Procedure Keystrokes Display
Select and clear data-entry
portion of Statistics worksheet.
&
j
&
z
X01 0.00
Enter data set.
63
!
#
X01=
Y01=
63.00
1.00
#
69
!
#
2
!
X02=
Y02=
69.00
2.00
#
71
!
#
X03=
Y03=
71.00
1.00
#
74
!
#
3
!
X04=
Y04=
74.00
3.00
#
72
!
#
X05=
Y05=
72.00
1.00
#
66
!
#
X06=
Y06=
66.00
1.00
#
76
!
#
X07=
Y07=
76.00
1.00
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