Question

A recent sample of college students 13 resulted in the following measures of heights and weights....

A recent sample of college students 13 resulted in the following measures of heights and weights.

Name Height (cm) Weight (kg)
Cedric 172 82.2
Orla 190 80.4
Stefan 189 77.4
Mary 150 67.0
Radu 160 61.1
Aida 199 89.4
Zoe 182 86.0
Sanjeev 168 82.5
Marc 171 86.1
Dalya 167 51.6
Cody 198 97.0
Becky 192 97.5
Chauncey 174 64.3



a) Use a statistical calculator or spreadsheet to find the coefficient of correlation for the data.
For full marks your answer should be accurate to at least three decimal places.

Coefficient of correlation: 0




b) Approximately what percent of the variation in weight in the sample is explained by variation in height?
For full marks your answer should be accurate to at least one decimal place.

Percent Explained: 0%

Homework Answers

Answer #1

The statistic software output for this problem is:

(a)

The coefficient of correlation for the data is : 0.703

(b)

R square = 0.4939

49.4% of the variation in weight in the sample is explained by variation in height .

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