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SmartOwl94
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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.
 2 years ago
 2 years ago
SmartOwl94 Group Title
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.
 2 years ago
 2 years ago

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SmartOwl94 Group TitleBest ResponseYou've already chosen the best response.1
I'm posting the work
 2 years ago

SmartOwl94 Group TitleBest 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.
 2 years ago

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

SmartOwl94 Group TitleBest 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 :(
 2 years ago

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

lisapeajac Group TitleBest 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
 2 years ago

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

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

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

SmartOwl94 Group TitleBest ResponseYou've already chosen the best response.1
And thanks so much btw
 2 years ago

helder_edwin Group TitleBest ResponseYou've already chosen the best response.1
give me a couple of min.
 2 years ago

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

helder_edwin Group TitleBest ResponseYou've already chosen the best response.1
here is the excel file
 2 years ago

SmartOwl94 Group TitleBest ResponseYou've already chosen the best response.1
Thanks! SOOO Much!
 2 years ago

helder_edwin Group TitleBest ResponseYou've already chosen the best response.1
u r welcome
 2 years ago
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