hw 3 – histogram 21 of 22

Learning Goal: I’m working on a statistics question and need an explanation and answer to help me learn.

Progress Check

Use this activity to assess whether you and your peers can:

  • Use histograms to compare shape, center, and spread in the distribution of a quantitative variable for two groups of individuals.


Students researching backpack weights gathered data from 45 elementary school children in the 3rd and 5th grades. The variable is “percent of body weight carried in the school backpack.” So a child who weighs 60 pounds and carries 9 pounds has a variable value of 15% (9 ÷ 60 = 0.15 = 15%). The American Chiropractic Association (ACA) recommends that children carry no more than 10% of their body weight.


When we analyze backpack weight as a percentage of body weight, how do 3rd and 5th graders compare? Are children in this study following the ACA recommendation?

distribution of percent-of-body-weight carried: stacked histograms (3rd graders, 5th graders)

Percent of Body Weight Carried
% of body weight carried in backpack Third
0-5% 1 1
5-10% 6 6
10-15% 11 4
15-20% 3 7
20-25% 0 1
25-30% 0 2
30-35% 0 1
Totals 21 22

Note: Left-hand end-points are included in each bin. So the 2nd bin contains students carrying 5% of their body weight.

Module 7 Discussion Board

Use the Module 7 discussion board (opens in a new tab) to ask questions or provide feedback about the problems in any Module 7 activity – including this peer-reviewed assignment.

Review Feedback

  • Peer feedback should be available before final drafts are due.
  • Instructor feedback is only available after an assignment is graded.
  • Use these directions (opens in a new tab) to learn how to review feedback.

Click the “Next” or > button to continue.

Content by Cuyamaca College math faculty and licensed under the Creative Commons 4.0 International License (Links to an external site.).


Peer Review (FD Optional)

Peer Review (FD Optional)

Criteria Ratings Pts
This criterion is linked to a Learning OutcomeFirst Attempt
5 ptsFull Marks

A first attempt was made on this assignment

0 ptsNo Marks
5 pts
This criterion is linked to a Learning OutcomeAnswering the Prompt
3 ptsFull Credit

All parts of the “Prompt” are addressed, and the responses demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. The answers are mostly correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow.

1.5 ptsPartial Credit

One or more parts of the “Prompt” are not addressed or are incorrect. Or, answers do not demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. Or, answers are correct, but the writing/work is unclear, incorrect, or difficult to follow.

0 ptsNo Marks

The “Prompt” is not addressed or the work is incorrect or missing. Or, the first draft was not a good-faith effort.

3 pts
This criterion is linked to a Learning OutcomePeer Review
2 ptsFull Credit

You completed the assigned peer review. The points you assigned in the rubric for the “Addressing the Prompt” criterion are appropriate. You used the “Add a Comment:” field to submit your assignment comments. Your assignment comments relate the score you assigned in the “Addressing the Prompt” criterion of the rubric to how your peer addressed the learning objectives when responding to the “Prompt.” (Note: the learning objectives are listed in the “Progress Check” section of the assignment.) If you awarded full credit for the “Addressing the Prompt” criterion in the rubric, your comments contextually and specifically explain what your peer did to demonstrate attainment of the relevant learning objectives. If you deducted points for the “Addressing the Prompt” criterion, you clearly explained what your peer can do better to demonstrate attainment of the relevant learning objectives.

1 ptsPartial Credit

You committed a good-faith effort to provide a high-quality peer review, but necessary instructive comments are missing. Or, you provided appropriate instructive comments but did not complete the rubric.

0 ptsNo Marks

No peer review provided or the comments are not instructive. Or, you did not commit a good-faith effort on your first draft.

2 pts
Total Points: 10
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