Author Question: Which of the following statements about cluster sampling is false? a. All elements within the ... (Read 93 times)

charchew · **on:** Jun 24, 2018

Which of the following statements about cluster sampling is false?
a. All elements within the randomly selected clusters form the sample
b. It generally requires a smaller total sample size than simple random sampling
c. Ideally, each cluster is a representative small-scale version of the entire population
d. It provides the best results when the elements within the clusters are not alike

Question 2

In a regression analysis of a first-order model involving 3 predictor variables and 25 observations, the following estimated regression equation was developed. y = 10 - 18x1 + 3x2 + 14x3 Also, the following standard errors and the sum of squares were obtained. sb1 = 3 sb2 = 6 sb3 = 7 SST = 4800 SSE = 1296 The multiple coefficient of determination is
a. .27.
b. .73.
c. .50.
d. .33.