Question Description

From chapters 1 & 2- Fundamental Statistics for the Behavioral SciencesThe questions are structured so that a single letter, word, or number will suffice. Computational

questions are arranged so that partial credit can be given for each step answered correctly.

Always use the following model to submit your answers to the questions.

EXAMPLE:

Your name:

Module Number:

Answers

Q1 C

Q2 B

Q3 A, etc.

If the question requires computation, do the calculations and then give the correct

values as follows:

(Always hold all decimal values through your computations, and round final

answers to at least two decimal places)!

Q4 7

Q5 4

Q6 22, etc.

If the question is a fill in the blank, just put in the appropriate word(s) as follows:

Q7 statistics

Q8 dependent variable, etc.

(There are 20 questions to be answered for Module 1)

Q1: The goal(s) of statistical procedures are to

A. predict or infer what might happen in the future

B. describe what has happened

C. both A and B are correct

D. none of the above

Q2: Parameter is to population as _________ is to sample

A. descriptive

B. inferential

C. margin of error

D. statistic

Q3: The concept of generalizing from a few observations to an entire group is central to the

area of A. descriptive statistics

B. inferential statistics

Q4: Statistical questions tend to fall into what two main categories?

A. samples or populations

B. relationships or differences

C. relationships or categories

D. differences or categories

E. none of the above

Q5: An example of descriptive statistics would be

A. based on previous data, prediction of the expected number of fans who will

show up to a Tuesday night professional baseball game

B. calculating the number of people who actually showed up to a professional

baseball game

For the following 4 questions (Q6 to Q9) identify the scale of measurement.

Use the following system:

A. nominal

B. ordinal

C. interval

D. ratio

Q6: Students voting for their preferred professors by ranking them

Q7: The Fahrenheit temperature scale

Q8: The amount of time it takes you to shower

Q9: Gender

For the following 2 questions (Q10 to Q11) identify the following variables as either

measurement or categorical.

Use the following system:

A. measurement

B. categorical

Q10: The number of points earned on a statistics exam

Q11: Academic letter grade (i.e. A, A-, B+, B, and so forth)

For the following 2 questions (Q12 to Q13) identify the following variables as either

discrete or continuous.

Use the following system:

A. continuous

B. discrete

Q12: The time elapsed since last Christmas

Q13: The number of cats you own

The following 4 questions (Q14 to Q17) are based on the following situation:

A biologist was investigating the number of eggs laid by snakes. She believes there is a

difference between Rattlesnakes and King Cobras.

Q14: What is the independent variable? __________

Q15: What is the dependent variable? __________

Q16: Is the dependent variable discrete or continuous? __________

Q17: What is the scale of measurement of the dependent variable? __________

Q18: A researcher was investigating whether gender, age of the student, and GPA of the

student had a bearing on how much alcohol the average Ohio University student would drink on

a typical weekend. How many dependent variables are involved with this research?

A. one

B. two

C. three

D. four

The following 2 questions (Q19 to Q20) are based on the following situation:

A quality control supervisor measures the quality of steel ingot on a scale from 0 to 10.

He designs an experiment in which three different temperatures and five different pressures are

utilized, with 20 ingots produced at each Temperature-Pressure combination.

Q19: What is/are the independent variable(s)?

A. quality of steel

B. temperature

C. pressure

D. two of the above are correct

Q20: What is/are the dependent variable(s)?

A. quality of steel

B. temperature

C. pressure

D. two of the above are correct

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