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EPPP Psychology

Category - Research Methods and Statistics

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Square-rooting decimals is one of the basic mathematical principles used in statistics. What is the square root of .64?

.40
.8
.08
.064

Explanation

Answer: B - .8 is the square root of .64. when square-rooting a decimal, first express it in hundredths rather than in tenths-.5 becomes .50, .100 becomes .10. If there is not an exact square root of the decimal, look for the number that is closest, expressed in tenths. So, the square root of .50 is .7. 7x7=49, which is closest to 50.

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