1. El Presidente supermarket attempted to estimate the average amount all households in Tampa spend on groceries each month. Households were separated by zip code, and 25 houses from each of the 56 zip. codes were randomly selected

Cluster

Convenience

Stratified

Simple random

Systematic

2. Target has 1897 stores in the United States. To estimate the average monthly sales in July, they randomly select 5 states, and calculate the average sales for every store in those states.

Cluster

Convenience

Stratified

Simple random

Systematic

3. In an effort to gauge customer satisfaction at a small store, the manager briefly surveys every seventh customer exiting the store.

Cluster

Convenience

Stratified

Simple random

Systematic

4. To determine if Americans are generally "for" or "against" the newest Supreme Court nominee, an online news company posts a survey for its readers online.

Cluster

Convenience

Stratified

Simple random

Systematic

5. All names for a raffle are put in a hat. The tickets are mixed and the winners drawn out by blindly selecting tickets from the hat.

Cluster

Convenience

Stratified

Simple random

Systematic

6. A fan observes the numbers on the shirts of a girl's soccer team. Identify the type of data collected.

qualitative

quantiative

7. Determine if the given variable is discrete or continuous:

The number of chinch bugs found 1 square foot of grass.

continuous

discrete

8. Determine the level of measurement for the variable below.

Car class at a rental car agency (compact, mid-size, luxury, minivan)

nominal

interval

ratio

ordinal

9. A study where ill patients recorded their diets for a week, and the nutrients and calories were then recorded and analyzed.

Is the study observational or experimental?

experimental

observational