___________ data has all the properties of ordinal data with the added feature that allows us to measure the differences between the categories with actual numbers in a meaningful way.
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Q. 2When perfect positive autocorrelation is present in a time series, the Durbin-Watson statistic will be equal to ________.
A) 0
B) 1
C) 3
D) 4
Q. 3AutoTrader.com would like to estimate the number of years owners keep the cars that they purchased as a new vehicle. The following data shows the age of seven vehicles that were sold for the first time by their owners.
4 12 3 10 7 4 5Using this sample, the point estimate for the age of cars sold for the first time is ________.A) 3.50
B) 4.86
C) 5.72
D) 6.43
Q. 4The average natural gas bill for a random sample of 21 homes in the 19808 zip code during the month of March was 311.90 with a sample standard deviation of 51.60. The 90 confidence interval around this sample mean is ________.
A) (292.46, 331.34)
B) (285.98, 337.82)
C) (278.09, 345.71)
D) (266.82, 356.98)
Q. 5A recent study reported that 73 of Americans could only converse in one language. A random sample of 130 Americans was randomly selected. What is the probability that 100 or fewer of these Americans could only converse in one language?
A) 0.6389
B) 0.7510
C) 0.8413
D) 0.9245
Q. 6____________ data is strictly qualitative data assigned to predetermined categories or labels.
A) Nominal
B) Ordinal
C) Interval
D) Ratio
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