1. Use the following terms to fill in the table below:

nominal, ordinal, interval, ratio, sample, population, independent variable, dependent variable, inferential statistics, descriptive statistics, a random sample

Term	Definition
	organize and summarize observations so that they are easier to understand
	Summarizes data from a subset of persons in an attempt to understand all persons of interest
	A subset of persons drawn from all persons within a parameter of interest
	In an experiment, the variable that is manipulated by the investigator
	All persons within the parameter of interest
	A scale of measurement where there is an absolute and meaningful zero
	A subset of persons was drawn from all persons within a parameter of interest when all persons within that parameter had an equal chance of being selected
	A scale where numbers represent rank-ordered data
	A scale where numbers represent equally distanced differences in a variable, though there is no absolute zero
	In an experiment, the variable that is measured because it is believed to be affected by the level (or presence) of another variable
	A qualitative scale

1. Briefly explain what a sample is vs. population

1. Briefly explain why, with the issues of nonprobability sampling, these techniques are used?

1. For the following four examples, indicate whether each appears to be using descriptive or inferential statistics.
   1. "The majority of the sample agreed that students should be offered art classes."

1. "Parents who were told that art classes would raise taxes were significantly more likely to say art classes should not be offered. Therefore, messages are important to whether persons will support proposed course offerings."

1. "Males were more negative toward expanded classes than females; therefore males in the community appear especially resistant."

1. "In the sample of 100 persons, 50 identified as male, 50 identified as female, and no participants identified as transgender or provided a different response for gender. The majority of males (65%) and females (68%) agreed that art classes should be offered."

1. Use the data in the table below to answer parts a through g.

ID	mpg	Car Age
1	22	20
2	18	20
3	21	20
4	27	20
5	26	15
6	25	15
7	24	15
8	25	15
9	26	10
10	18	10
11	18	10
12	14	10

a. What is the mode for Car Age?

b. What is the median for Car Age?

c. What is the mean for Car Age?

d. What is the mode for mpg?

e. What is the median for mpg?

f. What is the mean for mpg?

g. Which measure of central tendency is best for representing mpg? Briefly explain your reasoning.

1. Use the data in the table below to answer parts a through g. PLEASE NOTE - ZIP CODE IS A NOMINAL VARIABLE.

ID	Zip Code	Rent
1	91606	1700
2	91606	1800
3	91606	1200
4	91606	2000
5	91405	2700
6	91405	2500
7	91042	3500
8	91042	2200
9	91042	2750
10	91042	2800
11	91042	1280
12	91042	2300

a. What is the mode for Zip Code?

b. What is the median for Zip Code?

c. What is the mean for Zip Code?

d. What is the mode for Rent?

e. What is the median for Rent?

f. What is the mean for Rent?

g. Which measure of central tendency is best for representing rent? Briefly explain your reasoning.

1. frequency distribution table for the following data. Show all of your work. Use 4 classes to generate the frequency distribution table.

Numbers

5

10

7

19

0

12

15

7

6

5

5

8

11

13