HP 12c Platinum Reference Manual page 107

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