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Big Ideas Math: Modeling Real Life, Grade 6

BI

Big Ideas Math: Modeling Real Life, Grade 6 View details

3. Measures of Center

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Exercise 4 Page 430

The first thing that should be done when finding the mean of a data set is counting the number of values.

39

Practice makes perfect

The mean of a data set is calculated by finding the sum of all values in the set and then dividing by the number of values in the set. 53, 45, 43, 55, 28, 21, 61, 29, 24, 40, 27, 42 We can see that in the given data set, there are 12 values.

Mean=Sum of values/Number of values

SubstituteValues

Substitute values

Mean=53+ 45+ 43+ 55+ 28+ 21+ 61+ 29+ 24+ 40+ 27+ 42/12

Add terms

Mean=468/12

Calculate quotient

Mean=39

The mean of this data set is 39.

Subchapter links

Try It p.426-428

Self-Assessment for Concepts & Skills p.428

Self-Assessment for Problem Solving p.429

Review & Refresh p.430

Concepts, Skills, & Problem Solving p.430-432