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SmartOwl94
 3 years 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.
SmartOwl94
 3 years 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.

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SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1I'm posting the work

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1Hours 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.

lisapeajac
 3 years ago
Best ResponseYou've already chosen the best response.0Do you know how to turn the (r) on on your calculator?

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1I don't have a calculator yet.... I need a ti83 or 84 and my mom hasn't bought one yet :(

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1The online graphing calculators are hard to use too...

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

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1I'm so stuck please help someone!

helder_edwin
 3 years ago
Best ResponseYou've already chosen the best response.1u can use excel or any ohter spreadsheet program.

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1but how do I plot it in excel?

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1And thanks so much btw

helder_edwin
 3 years ago
Best ResponseYou've already chosen the best response.1give me a couple of min.

SmartOwl94
 3 years ago
Best ResponseYou've already chosen the best response.1okay thanks so much you are the best!

helder_edwin
 3 years ago
Best ResponseYou've already chosen the best response.1here is the excel file
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