Discuss the following:
A) Is the illustration below at the end 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 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 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 EXPLAIN:
|
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
|