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Use a graphing calculator to determine which equation for the line of regression, Pearson productmoment correlation value (r), and predicted value match the data in the chart. The chart below shows the number of hours a student spent studying for a math test and the score the student earned on the test.
 one year ago
 one year ago
Use a graphing calculator to determine which equation for the line of regression, Pearson productmoment correlation value (r), and predicted value match the data in the chart. The chart below shows the number of hours a student spent studying for a math test and the score the student earned on the test.
 one year ago
 one year ago

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SmartOwl94Best ResponseYou've already chosen the best response.1
I'm posting the work
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
Hours Spent Studying  0.51.25 1.5 1.75 2  2.5 3 3.5 4  Test Score,,,................  90  75 60  83 75 80 99 97 ?  A) y = 6.4x + 69.5, r = 0.48 Predicted test score for 4 hours of study equals 95. B) y = 6.1x + 74.5, r = 0.48 Predicted test score for 4 hours of study equals 99. C) y = 5.1x + 74.5, r = 0.88 Predicted test score for 4 hours of study equals 95. D) y = 7.4x + 69.5, r = 0.88 Predicted test score for 4 hours of study equals 99.
 one year ago

lisapeajacBest ResponseYou've already chosen the best response.0
Do you know how to turn the (r) on on your calculator?
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
I don't have a calculator yet.... I need a ti83 or 84 and my mom hasn't bought one yet :(
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
The online graphing calculators are hard to use too...
 one year ago

lisapeajacBest ResponseYou've already chosen the best response.0
Then you can't do the problem. Google "virtual TI 84" and you should be able to download one
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
I'm so stuck please help someone!
 one year ago

helder_edwinBest ResponseYou've already chosen the best response.1
u can use excel or any ohter spreadsheet program.
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
but how do I plot it in excel?
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
And thanks so much btw
 one year ago

helder_edwinBest ResponseYou've already chosen the best response.1
give me a couple of min.
 one year ago

SmartOwl94Best ResponseYou've already chosen the best response.1
okay thanks so much you are the best!
 one year ago

helder_edwinBest ResponseYou've already chosen the best response.1
here is the excel file
 one year ago
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