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# correlation coefficient

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Suppose you find a restriction in your study of IQ scores and school achievement at a selective private school. Restricting the range is likely to do what to the correlation coefficient?
a. Increase the size
b. Underestimate the strength
c. Have no effect
d. Change the sign

##### Solution Summary

The correlation coefficient is given. The underestimate of strengths are given.

##### Solution Preview

Hi,

This website may help:
http://www.utah.edu/stat/introstats/web-text/Correlation/#Restricted-Range

It's confusing at first because it gives you two scenarios - one when there is a ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.