Scatter Diagram of Craft Fairs and Exhibitors
Not what you're looking for?
Mary Sue wants to know if there is a connection between attendance at craft fairs and the number of exhibitors who have booths at the fair. For a random sample of seven local craft fairs, she chose a random day of the fair and recorded the number of exhibitors. In the data below, x represents the number of exhibitors and y represents the attendance in hundreds of people.
x 35 55 75 95 100 135 150
y 1.2 2.1 4.2 5.4 5.8 6.2 9.5
a) Draw the scatter diagram for the data.
b) Calculate the sample correlation coefficient, r.
c) Calculate the coefficient of determination, r2.
d) What does the coefficient of determination tell you about the variation in attendance and the variation in the number of exhibitors?
Purchase this Solution
Solution Summary
This solution conducts a regression analysis of the data on the attendance of people and analyzes the coefficient of determination. All steps are shown in an Excel file.
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.