statistics

The heights in inches of 14 randomly selected adult males in LA are listed as: 71, 67, 70, 59, 71, 68, 67, 71, 80, 68, 74, 69, 72, 68.

1. Display the data in a stem-and-leaf plot.

2. Find the mean.
3. Find the median.
4. Find the mode.
5. Find the range.
6. Find the variance.
7. Find the standard deviation

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  1. Find the mean first = sum of scores/number of scores

    Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

    Standard deviation = square root of variance

    Mode = most frequently occurring score

    Once arranged in order of value, the median = 50th percentile.

    Range = highest score - lowest

    I'll let you do the calculations.

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