Finding and Using the Mean

Finding and Using the Mean

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Find the mean number of siblings the girls in the class have.

Remember: a mean/average does not have to be a whole number.

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Find the average boys' height.

Remember: You may want to convert the heights into just straight inches (instead of each being in feet and inches) before finding the mean.

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The graph shows the test scores of 45 fifth graders of an elementary school.

Calculate the mean test score for this group of students to the nearest tenth.

Multiple Select

Which of the following conclusions are reasonable for the graph of the test scores of 45 fifth graders of an elementary school.

• The total score of the 45 students is equal to 'mean x 45'.

• The mean is between 4, the lowest score, and 10, the highest score.

• At least one student must have the mean score.

• Half the students scored more than the mean and the other half scored less than the mean.