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1. A researcher was interested lowering the high school dropout level in his county. He measured the reading level of students entering middle school (based on a standard test) and their academic performance at the end of 10th grade (as measured by overall GPA).
Use the following data to:
A. Compute a correlation coefficient using Excel.
B. Create a scatter plot using Excel.
C. Determine the coefficient of determination. Explain what it tells you.
D. Explain in words what the correlation coefficient tells you about the relationship between reading level when entering middle school and 10th grade academic performance as measured by GPA.
E. What does it not tell you?
Student Reading Level Score GPA
1 100 3.0
2 110 2.95
3 80 2.00
4 75 2.10
5 91 2.00
6 124 3.80
7 95 2.40
8 82 3.00
9 104 3.10
10 95 2.20
11 88 2.24
12 95 3.00
13 107 3.45
14 112 3.11
Year : 2008 2009 2010 2011 2012 2013 sale : 111 120 114 123 117 126
Project I The trial balance of the Parton Wholesale Company contained the following accounts at December 31, 2010 the end of the company’s calendar year. PARTON WHOLESALE COMPA
#question An electronic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies, and that these defects occur according to a Pois
what is random variable
Capital budget The piece of a budget: a separate budget: dedicated to proposed additions to capital assets & the means of financing to those additions,
Mention four characteristics and functions of statistics
A boat is heading across a river at a velocity of 25 mph. The river is flowing downstream at 10 mph. What is the actual velocity of the boat?
Refund can be defined as return of a part of a purchase price by a seller to a buyer, usually on a purchase of a specified quantity or a value of goods within a specified period.
1-100,101-200
Characteristics of index number
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