For the following data on 10 persons, construct a scatterplot showing the relationship between age and number of children, and describe the relationship in verbal terms.
Person (i) Age(X) Number of Children (Y)
1 42 5
2 26 2
3 38 2
4 23 1
5 21 0
6 19 0
7 79 6
8 25 2
9 75 4
10 67 3
My question is how will the data be displayed on a scatterplot showing the relationship between age and the number of children? Will I be able to describe the data and make a conclusion based on the information from the scatterplot that shows the relationship between age and the number of children?© BrainMass Inc. brainmass.com October 17, 2018, 3:14 am ad1c9bdddf
The expert constructs a scatterplot showing the relationship between age and number of children.
Correlation and regression analysis.
(a) How does correlation analysis differ from regression analysis?
(b) What does a correlation coefficient reveal?
(c) State the quick rule for a significant correlation and explain its limitations.
(d) What sums are needed to calculate a correlation coefficient?
(e) What are the two ways of testing a correlation coefficient for significance?