Question

1.     What is the goal of inferential statistics?

a.     To summarize data

b.     Drawing conclusions about data

c.     To quantify results

d.     To generalize based on data

2.     To determine if using a study guide is an effective tool for improving students’ understanding of statistical concepts, students either received (based on random assignment) a study guide or no study guide and subsequently took a test examining their knowledge on various statistical concepts. In this study, the presence/absence of the study guide is:

a.     The independent variable

b.     The dependent variable

c.     The extraneous variable

d.     The random variable

3.     The above study (in question 2) can best be described as:

a.     An experiment

b.     A correlational study

c.     A survey

d.     One involving two variables that are manipulated.

4.    Explain the goal of experimental studies.

5.    Explain the key features of experimentation that

a.    enables it to accomplish that goal.

6.     What is one limitation of correlational studies in relation to experimental studies?

a.     The lack of generalizability to human populations.

b.     The small sample size.

c.     The inability to provide information on causal relations.

d.     The lack of a clear cut conclusion

  

8.     What are the two reasons that limit the ability of correlational studies to provide information on causal relations between measured variables?

9.    Determining a college student’s academic major is an example of a(n)_____ scale of measurement.

a.    nominal          

b.    ordinal

c.     interval

d.     ratio

10. In a study, people’s weekly TV viewing time was classified as 1) less than 1 hour; 2) 1-2 hours, 3) 3-5 hours; 4) 6-10 hours, and 5) more than 10 hours. In this study, the measure of TV viewing times was what kind of measure?

a.     A nominal measure

b.     An ordinal measure

c.     An interval measure

d.     A ratio measure

Answer 1

Solution-1:

inference is using sample conclude about population

d.     To generalize based on data

6.     What is one limitation of correlational studies in relation to experimental studies?

cause and effect relationship cannot be studied with correlational studies

c.     The inability to provide information on causal relations.

9.    Determining a college student’s academic major is an example of a(n)_____ scale of measurement.

It has not no inherent order

a.    nominal

10. In a study, people’s weekly TV viewing time was classified as 1) less than 1 hour; 2) 1-2 hours, 3) 3-5 hours; 4) 6-10 hours, and 5) more than 10 hours. In this study, the measure of TV viewing times was what kind of measure?

Its a quantitative variable

it can have zero value as well

Its a ratio measure

d.     A ratio measure