Mathematics, 20.02.2020 22:25, swelch2010
Suppose that a researcher, using data on class size (CS)(CS)and average test scores from 103 third-grade classes, estimates the OLS regression
\widehat {Testscore}=556.828-6.2274CS, \text{ R}^2=.09, \text{SER}=12.3.
(a) A classroom has 20 students. The regression's prediction for that classroom's average test score is__ . (Round your response to two decimal places.)
(b) Last year a classroom had 17 students, and this year it has 21 students. The regression's prediction for the change in the classroom average test score is__ . (Round your response to two decimal places.)
(c) The sample average class size across the 103 classrooms is 22.90.The sample average of the test scores across the 103 classrooms is ___. (Hint: Review the formulas for the OLS estimators.) (Round your response to two decimal places.)
(d) The total sum of squares is ___ . (Hint: Review the formulas for the \text{R}^2R2 and \text{SER}.SER.) (Round your response to the nearest whole number.)
Answers: 1
Mathematics, 21.06.2019 16:30, pennygillbert
Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25
Answers: 2
Mathematics, 21.06.2019 22:00, nshuey0930
Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4
Answers: 2
Mathematics, 22.06.2019 06:30, davisnaziyahovz5sk
The soccer team is conducting a fundraiser selling long-sleeved t-shirts for $14 and short-sleeved t-shirts for $10. so far the team has sold less than $200 worth of the two types of t-shirts. which inequality best represents x, the number of long-sleeved t-shirts they have sold, and y, the number of short-sleeved t-shirts they have sold?
Answers: 1
Mathematics, 22.06.2019 07:00, samuelerlikhman
Can someone answer this question 94+147454521514264251+414-4466*4674 36+4554542252153
Answers: 2
Suppose that a researcher, using data on class size (CS)(CS)and average test scores from 103 third-g...
Geography, 12.12.2019 18:31
Health, 12.12.2019 18:31
Physics, 12.12.2019 18:31