HP 33S User Manual

Statistical Operations
11–5
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
15.5 9.25 10.0
12.5 12.0 8.5
Calculate the mean of the times. (Treat all data as x–values.)
Keys: Display: Description:
¹ ¡
{

}

Clears the statistics
registers.
15.5
/

Enters the first time.
9.25
/
10
/
12.5
/
12
/
8.5
/


Enters the remaining data;
six data points
accumulated.
º (
{

}







Calculates the mean time to
complete the process.
Example: Weighted Mean (Two Variables).
A manufacturing company purchases a certain part four times a year. Last year's
purchases were:
Price per Part (x) $4.25 $4.60 $4.70 $4.10
Number of Parts (y) 250 800 900 1000
Find the average price (weighted for the purchase quantity) for this part.
Remember to enter
y, the weight (frequency), before x, the price.
Keys: Display: Description:
¹ ¡
{

}

Clears the statistics
registers.
250
Ï
4.25
/
800
Ï
4.6
/
900
Ï
4.7
/




Enters data; displays n.
1000
Ï
4.1
/


Four data pairs
accumulated.
º (
{

}







Calculates the mean
price weighted for the
quantity purchased.
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

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HP 33S Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Silver
Digits	10 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157 x 16 x 81 mm