Quiz 1 Chapter 1

1.  A ________ is the complete collection of all measurements or data collected, whereas, a ________ is a subcollection of members selected from the complete collection

2.  Determine whether the given description corresponds to an experiment or an observational study. A stock analyst selects a stock from a group of twenty for investment by choosing the stock with the greatest earnings per share reported for the last quarter

3. On a test, 74% of the questions are answered correctly. If 111 questions are correct, how many questions are on the test?

4.  Identify which type of sampling is used. To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day.

5.  Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience.

An education researcher randomly selects 48 middle schools and interviews all the teachers at each school.

6.   Identify which type of sampling is used. The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag.

7.  A ________ is the collection of data from every member of the population

8.   A tax auditor selects every 1000th income tax return that is received. Identify which of these types of sampling is used

9  Determine whether the given value is a discrete or continuous variable. People are asked to state how many times in the last month they visited their family doctor

10.   Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience.

49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.