# added_slides - Multiple all scores by a constant? The new...

This preview shows pages 1–6. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
What happens to the mean of a  dataset when you… …add a constant to all scores? The new mean is equal to the original mean plus the constant value. …subtract a constant from all scores? The new mean is equal to the original mean minus the constant value. …multiple all scores by a constant? The new mean is equal to the original mean times the constant value. …divide all scores by a constant? The new mean is equal to the original mean divided by the constant value.
What happens to the standard  deviation if I… Add a constant to all scores? Adding a constant has no effect Subtract a constant from all scores? Subtracting a constant has no effect

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Multiple all scores by a constant? The new standard deviation will be equal to the absolute value of the constant times the original standard deviation. Divide all scores by a constant? The new standard deviation will be equal to the original standard deviation divided by the absolute value of the constant. Review: Practice examples 1. Calculate the mean, median, and mode for the following set of numbers? 15, 23, 23, 27, 28, 31, 32, 37 2. What are the deviation scores for the set of numbers? 3. Calculate the sum of the squared deviation scores....
View Full Document

## This note was uploaded on 01/27/2011 for the course EDPSY 400 at Penn State.

### Page1 / 6

added_slides - Multiple all scores by a constant? The new...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online