HP 12C#ABA hp 12c_solutions handbook_English_E.pdf - Page 109
monthly rental, the standard deviation, and the standard error of the mean?
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this procedure computes the mean, standard deviation, and standard error of the mean. 1. Press CLEAR . 2. Key in the first value and press . 3. Key in the respective frequency and press 0 display shows the number of data points entered. 4. Repeat steps 2 and 3 for each data point. 5. To calculate the mean (average) press 0 1 . . The 6 3 6. Press to find the standard deviation. 7. Press 0 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? Keystrokes Display CLEAR 190 1.00 First data pair entered. 54 0 195 32 0 2.00 Second data pair entered. 200 88 0 3.00 Third data pair entered. 206 92 0 4.00 Fourth data pair entered. 0 1 6 199.44 3 5.97 Average monthly rent. Standard deviation. 0 0.37 Standard error of the mean. Use the following HP-12C program for the previous example: KEYSTROKES DISPLAY 108