Psyc 210 E1 Review

What does a descriptive statistic do?

• summarizes, organizes, and explains results

• allows us to make inferences about the group of interest

• confounds my other variables

• takes on a range of values

A university surveyed 500 students to find out how many regularly use the campus gym. Out of those surveyed, 320 said they use the gym at least once a week. What is the population in this study?

• all the students at the university

• the 500 students who were surveyed

• the 320 students who said they regularly use the campus gym

• the 180 students who do not regularly use the campus gym

An example of a nominal variable would be __; an example of an ordinal variable would be __

• race finishing positions; type of running shoes

• type of running shoes; race finishing positions

• temperature during the race in (C° or F°); running time

• running time; temperature during the race (C° or F°)

A variable that is a response or caused by changes or differences is called...

• outcome

• predictor

• confounding

• scale

Independent variables are what?

• measured and manipulated

• manipulated and observed

• measured and observed

• only observed

What is an example of a reliable test?

• Rorschach inkblot test

• five people guessing my height

• taking the SAT three times and getting a 530 on the math section every time

• a watch measuring my 5K pace but stops at random points during the race

What is hypothesis testing?

• measuring a variable of interest using an operational definition

  
  

• summarizing data using descriptive statistics

  
  

• concluding information about relationships between variables based on evidence

• summarizing data using descriptive statistics

Cause-effect relationships requires controlling for what type of variable?

• scale

• confounding

• discrete

• continuous

The term ___ refers to the process of specifying data collection methods, hypotheses, and analysis plans before conducting a study

• preregistration

• HARKing

• open science

• meta-analysis

When should a group frequency table be used?

• all data are nominal

• when data is in smaller numbers

• when the data goes to many decimal places and covers a large range

• when the data includes many raw scores and there is only one group