Question 1

In order to satisfy ordinal level data requirements, you must be able to do which of the following?

Options :

A : Have a true zero

B : Have a constant interval from point to point

C : Be able to meaningfully arrange the data in rank order

D : Be able to establish ratios

Answer: C

Question 2

Which of the following is a characteristic of a standard deviation?

Options :

A : The standard deviation is based on the middle portion of the data.

B : The standard deviation reflects the variation of values between two points.

C : The standard deviation uses all the data points from the data set in its calculation

D : At least 95% of the points in a data set will always be within +-2 standard deviations from the mean.

Answer: C

Question 3

What is the median of the following data?

7, 17, 3, 19, 13, 9, 7

Options :

A : 7

B : 9

C : 13

D : 11

Answer: B

Question 4

What type of regression model does the following equation suggest? y = a + b1x1

Options :

A : Multiple factor regression

B : Nonlinear regression

C : Bivariate regression

D : Curvilinear regression

Answer: C

Question 5

You have been asked to comment on a proposed provision in the union contract. over the next 3 years, management proposes increases of 2%, 2.5%, 3% over the 3 year life of the contract. The union negotiator insists that it be 3%, 2.5%, 2.0%. Assuming the hourly rate for a job class is 12.50/hr., what is the rate in three years?

Options :

A : It will be 13.46 after three years

B : Management rate is higher

C : Union rate is higher

D : Cannot calculate

Answer: A

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