Question 46 (1 point) Listen In testing a multiple regression equation for statistical significance, the first step involves: looking at the "Significance F" in the output Checking if the intercept term has a t-value or not Checking if the number of observations are greater than 0 or not Checking if the t-Stat of the "x" variables is greater than 1.96 or not. Checking if the R Square value is positive or not Question 47 (1 point) Listen You use a weighing scale to measure your weight. You see that the weighing scale repeatedly shows your weight as 190 lbs. This is an example of: hawthorne effect validity nominal effect reliability Question 48 (1 point) Listen A complete enumeration of a every member of a population is called a: O population O sampling frame directory sample Ocensus Question 49 (1 point) Listen All of the following are probability sampling plans EXCEPT: Quota Random O Cluster Stratified Question 50 (1 point) Listen Which type of scale assumes an arbitrary zero point? O Nominal Ordinal Interval Ratio Median