# MCQs: Statistics

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Please see attached file and and answer the questions and include an explanation.

State insured uninsured unknown total

Nebraska 800,000 12,000 100 812,100

Arizona 2,000,000 800,000 1,000,000 3,800,000

Oregon 2,000,000 50,000 100,000 2,150,000

New York 8,000,000 2,000,000 5,000,000 15,000,000

total 12,800,000 2,862,000 6,100,100 21,762,100

A) Is the illustration above best labeled as a two way table?

Please explain:

B) What is it most often used for?

C) Which source below would permit us to run a "t" test?

A) Any list of values of a single variable

B) A simple frequency table with multiple categories

C) A dataset of measurements of one variable for two groups

D) A count of categories for multiple groups

PLEASE EXPLAIN:

D) For a "t" test, the "degrees of freedom" is always

a. σ - 1

b. The sample size squared

c. n - 1

d. The number of groups or categories minus one

PLEASE Explain the "degrees of freedom":

E) The χ2 test requires ________________.

a. Parametric (measurement-level) data

b. Frequency data

c. The mean and standard deviation of a dataset

d. Mean, median and mode only

PLEASE EXPLAIN:

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