Question:

A graphical representation of a frequency distribution is called a__________________

A.

scatter diagram

B.

histogram

C.

time-series plot

D.

stem-and-leaf plot

Answer» b. histogram

Question:

___________ is a set of elements taken from a larger population according to certainrules

A.

sample

B.

population

C.

statistic

D.

element

Answer» a. sample

Question:

The type of sampling in which each member of the population selected for the sample isreturned to the population before the next member is selected is called _________

A.

sampling without replacement

B.

sampling with replacement

C.

simple random sampling

D.

systematic sampling

Answer» b. sampling with replacement

Question:

The number of students on a college campus is a continuous variable

A.

true

B.

false

C.

neither true nor false

D.

any of the above

Answer» b. false

Question:

A simple aggregate quantity index is used to:

A.

measure the change in price of a product

B.

measure the change in quantity of a product

C.

measure the overall change in quantity of a range of products

D.

measure the overall change in price of a range of products

Answer» d. measure the overall change in price of a range of products

Question:

If the slope of the regression line is calculated to be 2.5 and the intercept 16 then thevalue of Y when X is 4 is:

A.

16

B.

66.5

C.

2.5

D.

26

Answer» d. 26

Question:

In the equation of a straight line, Y = mX + c , if m is equal to zero then when:

A.

x increases y decreases

B.

y increases x increases

C.

x increases y increases

D.

x increases y remains constant

Answer» d. x increases y remains constant

Question:

You are conducting a survey of the people of India to find out how popular football isamong the Indians. You randomly choose people to call, and make 1,000 phone calls to people scattered across the country. In this study, what of the following statement is true

A.

both the people of india and the people you called is the population

B.

the people of india is called the population, and the people you called are the sample.

C.

the people of india is the sample, and the people you called is the population.

D.

both the people of india and the people you called are samples.

Answer» b. the people of india is called the population, and the people you called are the sample.

Question:

__________ variable is a factor that is not itself under study but affects the measurementof the study variables or the examination of their relationships.

A.

exogenous

B.

endogenous

C.

extraneous

D.

dependent

Answer» c. extraneous

Question:

Which of the following is not one of the four types of variation that is estimated in time- series analysis

A.

predictable

B.

trend

C.

cyclical

D.

irregular

Answer» a. predictable