The ________ measures the total variation in the dependent variable in simple regression analysis.
A) sum of squares within
B) sum of squares error
C) sum of squares regression
D) total sum of squares
Q. 2The Centers for Disease Control (CDC) would like to test the hypothesis that the proportion of obese adults in the U.S. has increased this year when compared to last year. A random sample of 125 adults this year found that 56 were obese. Last year, a random sample of 140 adults found that 42 were obese. If Population 1 is defined as this year and Population 2 is defined as last year, and using = 0.01, the conclusion for this hypothesis test would be that because the test statistic is _____________________________ ________________________.
A) less than the critical value, the CDC cannot conclude that the proportion of obese adults in the U.S. has increased this year when compared to last year
B) less than the critical value, the CDC can conclude that the proportion of obese adults in the U.S. has increased this year when compared to last year
C) more than the critical value, the CDC cannot conclude that the proportion of obese adults in the U.S. has increased this year when compared to last year
D) more than the critical value, the CDC can conclude that the proportion of obese adults in the U.S. has increased this year when compared to last year
Q. 3In general, a four-period simple moving average forecast will experience less forecasting error than a three-period moving simple average forecast because the four-period technique uses more historical data.
Indicate whether the statement is true or false
Q. 4The least squares method will minimize the sum of squares _______ when describing the equation that best fits the ordered pairs.
A) error
B) regression
C) between
D) within
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