Question

# A researcher was interested in how students’ Graduate Record Examinations scores (GREQ- Quantitative and GREV-Verbal) predict...

A researcher was interested in how students’ Graduate Record Examinations scores (GREQ- Quantitative and GREV-Verbal) predict college students’ graduate school Grade Point Average (GGPA). He collects data from 30 college students. The GRE Quantitative (X1) and GRE Verbal (X2) scores can range from 400-1600 (Note. This is the old GRE score scale). GGPA (Y) can range from 0.00 to 4.00.

f. What proportion of variance in graduate grade point average cannot be accounted by the variability in the quantitative GRE and verbal GRE scores in combination? In other words, what is the unexplained variation in the regression model. (6 p)

g. Is this proportion of variance statistically significant at the .05 level of significance? Justify your answer. This includes providing the parameter being estimated, the statistical test (F, t, etc.) and its value, degrees of freedom associated with the statistical test. (14 p)

h. Using an alpha level of .05, justify your decision as to whether the regression coefficients for GREQ and GREV (when evaluated separately or after controlling for the other) are statistically significant. Justifying your decision includes providing the parameter(s) being estimated, the statistical test (s) (t, F etc.) and its (their) value, degree(s) of freedom associated with the statistical test(s). (14 p)

i. If someone were to increase their GRE-Quantitative score by 50 points, how much would you expect his or her GPA to change, after controlling for the GRE-Verbal variability? Show how you calculated your answer. (8 p)

j. In your own words explain why you think that the model did not explain all of the variability in GGPA. In other words, what other factors might play a role in increasing the amount of variability explained in GGPA. (8 p)

Answer #1

Know the answer?
Your Answer:

#### Post as a guest

Your Name:

What's your source?

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Not the answer you're looking for?
Ask your own homework help question
ADVERTISEMENT
##### Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

ADVERTISEMENT
##### Active Questions
• FBC(Pty) manufactures one product, Product X. You were given the following information for period 4. Product...
asked 7 minutes ago
• Briefly describe the sensory and/or motor symptoms you might experience after an injury to each of...
asked 10 minutes ago
• In contrast to excitatory postsynaptic potentials, inhibitory postsynaptic potentials… a. Involve changes in ion flow across...
asked 12 minutes ago
• A wave on a string has a displacement according to the equation: y(x,t) = 25.0 cm...
asked 17 minutes ago
• Solve the equation and please show your work 3(x+1)+2(x+4)=5x+6
asked 19 minutes ago
• You are the president of high performing division and the Chief Executive Officer tells you in...
asked 20 minutes ago
• It took a Wisconsin shipyard 125,000 labor-hours to produce the first of several tugboats that you...
asked 37 minutes ago
• This U.S. Supreme Court decision gave parolees some protection against arbitrary and capricious revocation of parole.
asked 49 minutes ago
• Schadek Silkscreen Printing Inc. purchases plastic cups on which to print logos for sporting events, proms,...
asked 55 minutes ago
• The domain for the first input variable to predicate T is a set of students at...
asked 1 hour ago
• Sulfide ion was determined by indirect titration with EDTA. To a solution containing 25.00mL of 0.04332...
asked 1 hour ago
• Discuss why regulations are important for financial institutions that lend finances to business enterprises (at least...
asked 1 hour ago