Statistics for Business and Economics
Statistics for Business and Economics
8th Edition
ISBN: 9780132745659
Author: Paul Newbold, William Carlson, Betty Thorne
Publisher: PEARSON
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Chapter 1, Problem 71E
To determine

Draw the time series plot.

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QI: A college student has purchased some shares in a company so that the profits are according to the year as in the following table; Year 1997 1999 2001 2002 Profits 43 65 159 248 Use third order Lagrange interpolation to calculate the profit in the year 2000.
Enrollment at a community college over the last 4 years is: 1,800 (year 1), 2,300 (year 2), 3,000 (year 3), and 3,700 (year 4).  Show the data on a bar graph.  Let each horizontal increment represent 500 students.
You are given the following dataset from a sample of the population.  Superhero Number of Villains Captured Number of Losses  Average Hours of  Sleep Spiderham 30 9 12 Alligator Loki 50 1 23 Iron Man 20 8 6 Phil Coulson 18 2 8 Yelena Belova 25 5 2 Round all answers to 2 decimal places. IE: 3.567 = 3.57 A. What kind of dataset is this?  Answer either Panel, Time series, or cross sectional B. Calculate the average number of villains captured in this sample.   C. Calculate the variance of the number of villains captured in this sample.     D. Calculate the correlation between the number of villains captured and average hours of sleep  . If answer is negative, include negative sign. E. Calculate the sample covariance between the average number of losses and average hours of sleep  . If answer is negative, include negative sign.
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