CJA 341, STATISTICS FOR CRIMINAL JUSTICE
Learning Check 1
Instructions
Read each prompt carefully and replace the placeholder text “[Final answer here]” in the
teal-shaded cells with your response for each question. Show all your work (every step)
on a separate sheet of paper, and either attach it to the end of this document or
combine it into a single PDF to upload with this document. Please do not alter the
formatting, font style, or color.
To edit this document in Google Docs, click “File” and then “Make a Copy.”
Please remember to upload your calculations.
A substantial amount of points will be deducted if you do not show your work.
Important Reminders
● Academic Integrity and Original Work: All work must be your own. Copying from
peers or using AI or other technological tools to generate or revise responses will
result in an automatic 0 for the entire assignment.
● Clear Explanations: When interpretations are requested, be thorough and clearly
explain your reasoning. Your response should include enough detail for a general
reader with no statistics background to fully understand your explanation without
needing to refer to the prompt or any data separate from your interpretation.
● Rounding Rules: Round all intermediate calculations to 4 decimal places. Final
answers may be rounded to 2 decimal places.
Student Acknowledgement
By typing your name into the box below, you acknowledge that you have read the
instructions and that all work you will submit to Canvas is entirely your own. Any
answers found to be plagiarized, copied from other sources or peers, or generated or
revised using any AI software (including Grammarly) will result in an automatic “0” on
the Learning Check. If you have any questions or concerns, please visit one of the
scheduled office hours to discuss.
Student Name
,PART I. Foundational Concepts (8 points) | Total Score: __________
QUESTION 1.
Identify the level of measurement for each variable below.
Variable Level of
Measurement
Number of prior convictions Interval ratio
Perceived fairness of court outcome (very unfair → very fair) ordinal
Severity of harm caused by the offense (none, minor, serious, ordinal
fatal)
Participation in diversion or rehabilitation programs (yes, no) Nominal
Relationship of victim to suspect (family, acquaintance, stranger) Nominal
Self-assessed likelihood of recidivism (scale 1–10) ordinal
(Q1 Score _____ / 3 possible)
QUESTION 2.
Identify the independent and dependent variable. Then identify the level of
measurement for the independent and dependent variable.
A researcher is interested in studying whether the level of community trust in police
(low, medium, high) influences the frequency of reported violent crimes across
neighborhoods (number of reported incidents per 1,000 residents). The researcher will
also include variables for household income ($25,000–$120,000), unemployment rate
(2%–15%), population density (500–10,000 residents per square mile), and prior-year
crime rates (0–75 incidents per 1,000 residents).
Variable Name Level of Measurement
Independent Variable Level of community trust in ordinal
police.
Dependent Variable Frequency of reported Interval-ratio
violent crimes across
neighborhoods (number of
reported incidents per 1,000
residents).
(Q2 Score _____ / 2 possible)
QUESTION 3.
, The class intervals below represent ages of young adult respondents. Which set
of class intervals should be used? Why?
a. 18-19 b. 18-19 c. 18-20 d. 18-19
19-20 20-21 22-24 21-22
20-21 22-23 26-28 24-25
The set of intervals that should be used is B, which is 18-23, because they include all the
intervals and do not skip any set of intervals like the others.
(Q3 Score _____ / 3 possible)
Learning Check 1
Instructions
Read each prompt carefully and replace the placeholder text “[Final answer here]” in the
teal-shaded cells with your response for each question. Show all your work (every step)
on a separate sheet of paper, and either attach it to the end of this document or
combine it into a single PDF to upload with this document. Please do not alter the
formatting, font style, or color.
To edit this document in Google Docs, click “File” and then “Make a Copy.”
Please remember to upload your calculations.
A substantial amount of points will be deducted if you do not show your work.
Important Reminders
● Academic Integrity and Original Work: All work must be your own. Copying from
peers or using AI or other technological tools to generate or revise responses will
result in an automatic 0 for the entire assignment.
● Clear Explanations: When interpretations are requested, be thorough and clearly
explain your reasoning. Your response should include enough detail for a general
reader with no statistics background to fully understand your explanation without
needing to refer to the prompt or any data separate from your interpretation.
● Rounding Rules: Round all intermediate calculations to 4 decimal places. Final
answers may be rounded to 2 decimal places.
Student Acknowledgement
By typing your name into the box below, you acknowledge that you have read the
instructions and that all work you will submit to Canvas is entirely your own. Any
answers found to be plagiarized, copied from other sources or peers, or generated or
revised using any AI software (including Grammarly) will result in an automatic “0” on
the Learning Check. If you have any questions or concerns, please visit one of the
scheduled office hours to discuss.
Student Name
,PART I. Foundational Concepts (8 points) | Total Score: __________
QUESTION 1.
Identify the level of measurement for each variable below.
Variable Level of
Measurement
Number of prior convictions Interval ratio
Perceived fairness of court outcome (very unfair → very fair) ordinal
Severity of harm caused by the offense (none, minor, serious, ordinal
fatal)
Participation in diversion or rehabilitation programs (yes, no) Nominal
Relationship of victim to suspect (family, acquaintance, stranger) Nominal
Self-assessed likelihood of recidivism (scale 1–10) ordinal
(Q1 Score _____ / 3 possible)
QUESTION 2.
Identify the independent and dependent variable. Then identify the level of
measurement for the independent and dependent variable.
A researcher is interested in studying whether the level of community trust in police
(low, medium, high) influences the frequency of reported violent crimes across
neighborhoods (number of reported incidents per 1,000 residents). The researcher will
also include variables for household income ($25,000–$120,000), unemployment rate
(2%–15%), population density (500–10,000 residents per square mile), and prior-year
crime rates (0–75 incidents per 1,000 residents).
Variable Name Level of Measurement
Independent Variable Level of community trust in ordinal
police.
Dependent Variable Frequency of reported Interval-ratio
violent crimes across
neighborhoods (number of
reported incidents per 1,000
residents).
(Q2 Score _____ / 2 possible)
QUESTION 3.
, The class intervals below represent ages of young adult respondents. Which set
of class intervals should be used? Why?
a. 18-19 b. 18-19 c. 18-20 d. 18-19
19-20 20-21 22-24 21-22
20-21 22-23 26-28 24-25
The set of intervals that should be used is B, which is 18-23, because they include all the
intervals and do not skip any set of intervals like the others.
(Q3 Score _____ / 3 possible)
