Description
For the data set 88 79 86 93 76 80 82 72 95 79, which of the follow are true?
A. The range is 23
B. The interquartile range is 9
C. The standard deviation is 7
D. The interquartile range is greater than the range
E. The variance is the square root of the standard deviation
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Explanation & Answer
a and c are correct.....................................................................................
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Progress Check
Use this activity to assess whether you and your peers can:
Use histograms to compare shape, cente ...
Grossmont and Cuyamaca College Histograms Worksheet
Progress Check
Use this activity to assess whether you and your peers can:
Use histograms to compare shape, center, and spread in the distribution of a quantitative variable for two groups of individuals.
Context
Students researching backpack weights gathered data from 45 elementary school children in the 3rd and 5th grades. The variable is “percent of body weight carried in the school backpack.” So a child who weighs 60 pounds and carries 9 pounds has a variable value of 15% (9 ÷ 60 = 0.15 = 15%). The American Chiropractic Association (ACA) recommends that children carry no more than 10% of their body weight.
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When we analyze backpack weight as a percentage of body weight, how do 3rd and 5th graders compare? Are children in this study following the ACA recommendation?
Percent of Body Weight Carried% of body weight carried in backpackThird
gradersFifth
graders 0-5%11 5-10%66 10-15%114 15-20%37 20-25%01 25-30%02 30-35%01Totals2122
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Progress Check
Use this activity to assess whether you and your peers can:
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Progress Check
Use this activity to assess whether you and your peers can:
Use histograms to compare shape, center, and spread in the distribution of a quantitative variable for two groups of individuals.
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When we analyze backpack weight as a percentage of body weight, how do 3rd and 5th graders compare? Are children in this study following the ACA recommendation?
Percent of Body Weight Carried% of body weight carried in backpackThird
gradersFifth
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Note: Left-hand end-points are included in each bin. So the 2nd bin contains students carrying 5% of their body weight.
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