Posted: February 17th, 2017

Explain the difference between probability and statistics. Include an illustration

1. Describe the difference between inferential and descriptive statistics

2. In completing a survey, subjects used the following numbers to indicate marital status
I = Single (never married) 2 = Married 3 = Divorced 4 = Widowed
Is this data qualitative or quantitative? Explain

3. Discuss the difference between a variable and a parameter. Include an illustration.

4. Explain the difference between probability and statistics. Include an illustration

5. Label each of the following as an observational or experimental study. For the experimental study state the control group and the treatment group.

a. A researcher finds that children whose parents smoke have more respiratory illness than children whose parents do not smoke have.
b. A teacher divides her class into two groups. One group is taught a lesson on the computer and the other is taught by traditional lecture. The teacher then gives a test to see which group has better grades.

6. Construct a frequency distribution for the data given below:

26 26 25 17 16 16 14 17 21 16 16
18 17 15 15 19 16 17 22 15 19 17
16 24 16

7. Contrast the nominal scale of measurement to the ordinal scale. In your opinion what type of scale is used in a list of the order of finish in a horse race? What type of scale is used if we had to describe the sex of the jockeys?

8. Describe briefly how an experimental study is conducted. What is the difference between the two types of variables used?