1.Explain what a standard deviation value measures in quantitative data.

2.in the group of 250 children aged 10-12, the average amount of screen time was 17.4 hours per week.Explain why 17.4 hours per week would be considered a statistic rather than a parameter?

3.Using the data in #8,determine the following statistics for the data set:

a.Mean

b.Median

c.Mode

d.Range

e.St. deviation

f.Variance

Data set from#8:

Distribution of 2"d Graders' Reading Times in Mrs. Barnett's Class 5 6 7 8 9 10 12 13 14 15 16 17 18 Time (in minutes)\fData set from#8: Number of Sit-ups Completed in 90 Seconds by a Group of 30 Children 18 36 38 34 22 31 29 36 16 39 32 34 9 45 34 27 40 30 26 31 41 19 28 28 9 23 35 25 22 42