Question

A graduate program wants to determine if first year graduate student GPA,y, Is linearly related to score on the quantitative section of the GRE,x, (Graduate Recored Examinations).

Data was collected from 15 randomly selected graduate students. Scores on the quantitative secrion of the GRE ranged from 480 to 720.

1. To determine if the correlation is significant, what rule is used?

a. correlation is significant if |r| > critical value.

b. correlation is significant if |r| < critical value

c. correlation is significant if r < .05

d. correlation is significant if r > .05

2. Is the correlation significant?

a. Yes, quantitative GRE score can be used to estimate 1st year GPA

b. No, quantitative GRE score cant be used to estimate first year GPA

3. For each of the quantitave GRE scores, use the regression equation to predict the students first year GPA.

Type either a numerical value or not appropriate

Round final answer to two decimal places.

400:

500:

600:

Question 5 1 pts Describe the relationship between quantitative GRE score and first year GPA. o As quantitative GRE score increases, first year GPA tends to decrease. As quantitative GRE score increases, first year GPA also tends to increase. The higher the GPA, the lower the quantitative GRE score. A higher GPA causes a student to have a higher quantitative GRE score, GPA and quantitative GRE are not correlated

Answer 1

Scorte Solution :- Given that. first, year goraduates student GPA. y. is linearly Selated to on the quantitative section of the GIRE, X ( 6131aduate giecored examination). => Data collected from 15 gandomly selected graduate . Students. GIRE Scones Hanged from 480 to 7 20 1 Rule fosa Cosgelation is significant ;-> DE 9 < negative critical value 04 H7 positive Qritical value then 24 is significant. (H is correlation) Answer:@ Consulation is significant it la scritical value. < Is the counrelation significant ! → It is given that relation is linearn. → C099elation coefficient is nearly 1. do It is very much higher than Gritical value. => Answer : + Yes, quantitative GIRE scome can be used to estimate gost year © Now we have to predict the students first yeay GIPA. llsing quantitative GIRE SCOMES. → It is approximately equal to mean of above reainge. Mean = 61PA. 480+720 oo 600. 2 ởo omswer :7600 Question :-5 Relation between quantitative GIRE score and fisust year GipA. is linear, and also GRE score increases, first year GipA also tends to increases Aswer :> As quantitative GRE score increases, first year. GIPA also tends to inouease.

-> I hope you understand. Do you have any doubt then comment it. Thank you