Question

1. Movie companies need to predict the gross receipts of individual movies once a movie has debuted. The following results, stored in the table below, are the first week-end gross, the U.S. gross and the worldwide gross (in $ Million) of the eight Harry Potter movies:

Title	First Weekend Gross ($ Mil)	U.S. Gross ($ Mil)	Worldwide Gross ($ Mil)
Sorcerer’s stone	90.295	317.558	976.458
Chamber of secrets	88.357	261.988	878.988
Prisoner of Azkaban	93.687	249.539	795.539
Goblet of Fire	102.335	290.013	896.013
Order of the Phoenix	77.108	292.013	938.469
Half- Blood Prince	77.836	301.460	934.601
Deathly Hallows Part I	125.017	295.001	955.417
Deathly Hallows Part I	169.189	381.011	1328.111

1. Construct a scatter plot with first weekend gross on the X axis and US gross on the Y axis.
2. Construct a scatter plot with first weekend gross on the X axis and worldwide gross on the Y axis.
3. What can you say about the relationship between first weekend gross and US gross and first weekend gross with worldwide gross?

Answer 1

i am using minitab to solve the problem.

a).steps for getting scatterplot:-

copy the data in two column of minitab worksheet named contaminant level and weight 'graph' 'scatterplot' 'simple' 'ok' in 'y variables' select  US gross  and in 'x variables' select first weekend gross 'ok'.

b).steps for getting scatterplot:-

copy the data in two column of minitab worksheet named contaminant level and weight 'graph' 'scatterplot' 'simple' 'ok' in 'y variables' worldwide gross select and in 'x variables' select  first weekend gross   'ok'.

c).steps for calculating correlation coefficient:-

stat 'basic statistics' 'correlation' select the two in variables choose Pearson correlation' ok.

following this i have found,correlation coefficient between first weekend gross and US gross = 0.728

correlation between first weekend gross and worldwide gross = 0.823

so,from scatterplot and correlation we can conclude there is positive relationship between first weekend gross and US gross and between first weekend gross and worldwide gross . the first weekend gross and worldwide gross are more correlated than the first weekend gross and US gross.

*** if you have any doubt regarding the problem please write it in the comment section.if you are satisfied please give me a LIKE if possible...