One-Variable Statistics Example - Texas Instruments BA II PLUS User Manual

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 (
them.
Find the mean and the sample standard deviation.
Example: Entering One-Variable Statistical Data
Procedure
Select and clear data-entry
portion of Statistics worksheet.
Enter data set.
6: Statistics Worksheet
Keystrokes
& j
& z
!
63
#
# !
69
# !
2
# !
71
#
# !
74
# !
3
# !
72
#
# !
66
#
# !
76
#
nn) for
Y
Display
X01 0.00
X01= 63.00
Y01= 1.00
X02= 69.00
Y02= 2.00
X03= 71.00
Y03= 1.00
X04= 74.00
Y04= 3.00
X05= 72.00
Y05= 1.00
X06= 66.00
Y06= 1.00
X07= 76.00
Y07= 1.00
95
P
P
P
P
P
P
P
P
P
P
P
P
P
P