Suppose that there is the following relationship between GPA and SAT: E[GPAjSAT] = .68 + .0025SAT.
(a) What is the expected GPA when SAT= 750? What is the expected GPA when SAT= 1500?
(b) If E[SAT] = 1000, what is E[GPA]?
Suppose that there is the following relationship between GPA and SAT: E[GPAjSAT] = .68 + .0025SAT....
(6) [4 pts] Let GPA denote a random variable for the college student's grade point average, and SAT denote a random variable for the college student's SAT score. Suppose that there is the following relationship between GPA and SAT: E[GPAISAT] 68+.0025SAT. (a) What is the expected GPA when SAT- 750? What is the expected GPA when SAT- 1500? (b) If E SAT 1000, what is E[GPA]?
A university made an analysis of the relationship between the Math SAT scores (range 200-800) and first-year GPAs(range 0 to 4.0) for students who complete the first year. The average SAT score is 531 and the SD is 76 and the average GPA is 2.75 and the SD is 0.65. Suppose the correlation coefficient is found to be 0.7. a) A student is chosen at random and has a SAT score of 678. Use regression to predict this student's GPA....
At a university, the correlation coefficient (r) between SAT scores and college GPA is 0.8. Samantha finds the Z score for her SAT score, and wants to use it to predict her Z score for her college GPA. Her SAT Z score is 2. What would be her Z score for her GPA?
Research question: Is there a relationship between IQ scores, SAT-Math scores, and SAT-Verbal scores? What is one type of graph that you could make to visualize the relations between these three variables at once?
According to the 68-95-99.7 Rule, 99.7% of high school seniors had SAT scores between what and what?
The relationship between hours of exercise per week and GPA has a parabolic shape. That is, increasing exercise first increases GPA, but then, at a certain point, GPA tends to decrease. The variability is roughly the same for all levels of exercise, and responses are independent. Would regression be appropriate? ? no, because the relationship is not linear no, because the slope and the intercept are unknown no, because it is not a designed experiment yes, if GPA is Normally...
Predicting GPA from Verbal SAT score It is possible to use the information in StudentSurvey to fit a linear model to use Verbal SAT score to predict a student's grade point average in college. The regression equation is GPA^=2.03+0.00189⋅VerbalSAT. Click here for the dataset associated with this question. (a) What GPA does the model predict for a student who gets a 510 on the Verbal SAT exam? What GPA is predicted for a student who gets a 650 ? (b)...
Hours studied (per week) 2 4 6 8 10 SAT Scores 900 1000 1050 1075 1090 33) Jamie is preparing to take his SAT tests. The table above shows how Jamie's score depends on the number of hours a week Jamie studies a. Plot the relationship in the figure, putting the hours studied on the horizontal axis. b. Is the relationship you plotted positive or negative? c. What happens to the slope of the relationship as hours studied increase? d....
4. Educational researchers desired to find out if a relationship exists between the av- erage SAT verbal score and the average SAT mathematical score. Several states were randomly selected, and their SAT average scores are recorded below. The fol- Table 1: SAT Scores X: Verbal 526 504 594 585 503 589 Y: Math 530 522 606 588 517 589 lowing quantities have been computed for your convenience: x = 3301, y 3352, 2x = 1825683, y2 = 1880574 and Dry...
Suppose you wish to see if there is a relationship between the price (in $1000) and weight (in pounds) of 9 racing bikes. You collected the information below. Round to 4 decimal places and let me know if the purple if correct! Suppose you wish to see if there is a relationship between the price (in $1000) and weight (in pounds) of 9 racing bikes. You collected the information below. (See exercise 20 on page 552 of your textbook for...