13. The following table shows the distribution of nappies consumed per day by number of babies in a sample of childminders._ babies nappies 8 40 11 33 5 10 7 28 6 30 8 56 5 15 13.1) Find the correlation coefficient. Comment briefly on the result. 13.2) Find the equation of the line of best fit when Y= nappies per day and X = number of babies. 13.3) Comment briefly on the slope and intercept of the line of best fit.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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13. The following table shows the distribution of nappies consumed per day by number of babies
in a sample of childminders.
babies
nappies
8
40
11
33
5
10
7
28
6
30
8
56
5
15
13.1) Find the correlation coefficient. Comment briefly on the result.
13.2) Find the equation of the line of best fit when Y= nappies per day and X = number of
babies.
13.3) Comment briefly on the slope and intercept of the line of best fit.
13.4) Elli decides to start to work as a childminder and wants to provide nappies. She plans to
accept 5 babies. What is the estimated number of nappies per day she needs to buy based
on the regression equation? If she buys 19 nappies per day is this more or less than the
number predicted by the line of best fit, and if so, by how much?
Transcribed Image Text:13. The following table shows the distribution of nappies consumed per day by number of babies in a sample of childminders. babies nappies 8 40 11 33 5 10 7 28 6 30 8 56 5 15 13.1) Find the correlation coefficient. Comment briefly on the result. 13.2) Find the equation of the line of best fit when Y= nappies per day and X = number of babies. 13.3) Comment briefly on the slope and intercept of the line of best fit. 13.4) Elli decides to start to work as a childminder and wants to provide nappies. She plans to accept 5 babies. What is the estimated number of nappies per day she needs to buy based on the regression equation? If she buys 19 nappies per day is this more or less than the number predicted by the line of best fit, and if so, by how much?
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