HP 12c Platinum - Page 107

Statistics 107
5.
To calculate the mean (average) press
:0?1:6?3gÖ.
6.
Press
gv to find the standard deviation.
7.
RPN: Press :0grz to find the standard error of the mean.
7.
ALG: Press z:0gr³ to find the standard error of the mean.
Example 1: A survey of 266 one-bedroom apartment rentals reveals that 54 rent for $190
a month unfurnished, 32 rent for $195 per month, 88 rent for $200 per month, and 92 rent
for 206 per month. What are the average monthly rental, the standard deviation, and the
standard error of the mean?
12c platinum / 12C
RPN Keystrokes
12c platinum
ALG Keystrokes
Display Comments
fCLEARH fCLEARH
190\\ 190³54?+0
54?+0§_
§~³gF~_
1.00
First data pair entered.
195\\ 195³32?+0
32?+0§_
§~³gF~_
2.00
Second data pair entered.
200\\ 200³88?+0
88?+0§_
§~³gF~_
3.00
Third data pair entered.
206\\ 206³92?+0
92?+0§_
§~³gF~_
4.00
Fourth data pair entered.
:0?1:6 :0?1:6
?3gÖ ?3gÖ
199.44
Average monthly rent.
gv gv
5.97
Standard deviation.
:0grz z:0gr³
0.37
Standard error of the
mean.
Use the following HP 12C Platinum program for the previous example:
12c platinum / 12C
RPN KEYSTROKES
DISPLAY
12c platinum
ALG KEYSTROKES
DISPLAY
fs fs
fCLEARÎ
000,
fCLEARÎ
000,
?+0
001,44 40 0
?+0
001,44 40 0
§
002, 20
§
002, 20
_
003, 49
~
003, 34
g(000
004,43,33,000
³
004, 36
:0
005, 45 0
gF
005, 43 40
?1
006, 44 1
~
006, 34
:6
007, 45 6
_
007, 49
?3
008, 44 3
g(000
008,43,33,000
gÖ
009, 43 0
:0
009, 45 0
t
010, 31
?1
010, 44 1