Education Technology

# Knowledge Base

## Solution 11239: Computing One-Variable Statistics on the BA II PLUS™ and the BA II PLUS™ PROFESSIONAL.

### How can I compute one-variable statistics on the BA II PLUS and the BA II PLUS PROFFESIONAL?

To compute one-variable statistics on the BA II PLUS or the BA II PLUS PROFESSIONAL, follow the steps below:

For Example: Below is a sample of prices for a particular item at 10 randomly selected stores. Find the mean and the sample standard deviation.

$63,$66, $69,$69, $71,$72, $74,$74, $74,$76

1) Press [2nd] and then the number 7 key [DATA] to enter the data for the calculation.
2) Once in the menu press [2nd] [CE/C] to clear the worksheet .
3) Enter 63 and press [ENTER] and then press the [Down Arrow] twice.
4) Enter 66 and press [ENTER] and then press the [Down Arrow] twice.
5) Enter 69 and press [ENTER] and then [Down Arrow] once and press 2 [ENTER] for the frequency.
6) Enter 71 and press [ENTER] and then press the [Down Arrow] twice.
7) Enter 72 and press [ENTER] and then press the [Down Arrow] twice.
8) Enter 74 and press [ENTER] and then [Down Arrow] once and press 3 [ENTER] for the frequency.
9) Enter 76 and press [ENTER].
10) Press [2nd][STAT].
11) Press [2nd][SET] until 1-V is displayed.
12) [Down Arrow] to view the sample size which is 10.00.
13) [Down Arrow] to view the mean which is 70.8
14) [Down Arrow] to view the sample standard deviation which is 4.08.

Please see the BA II PLUS or BA II PLUS PROFESSIONAL guidebooks for additional information.