I need answer for #2 please now For all problems show your work, and state your

Question

I need answer for #2 please now For all problems show your work, and state your conclusions in non-statistical terms I. The data below represent scores for a class on two quizzes in a statistics class. Calculate the Pearson r to indicate the strength and direction of the relationship between the two grades. Do the appropriate test for statistical significance, and the indicator of effect size. Quiz Quiz 2 13 27 24 23 15 2. Repeat the analysis for the data in Question 1 looking at Quiz 1 as a predictor of Quiz 2. Do the ANOVA for regression, and present the final predictor equation

Explanation / Answer

Solution 2:

From given data we can find regression equation:

Suppose X : Quize1 and Y : Quize2

Using MINITAB ,

stat--------> Regression ----------->Regression...--------->

Response: Quize2

Predictors: Quize1

Ok

Output:

The regression equation is

Quize2 = - 12.5 + 1.31 Quize1

Predictor Coef SE Coef T P
Constant -12.48 11.18 -1.12 0.346
Quize1 1.3095 0.4465 2.93 0.061

S = 3.424 R-Sq = 74.1% R-Sq(adj) = 65.5%

Analysis of Variance

Source DF SS MS F P
Regression 1 100.83 100.83 8.60 0.061
Residual Error 3 35.17 11.72
Total 4 136.00

Done

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