This is the first of several mini-labs designed to teach you how to use StatCrun

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This is the first of several mini-labs designed to teach you how to use StatCrun

This is the first of several mini-labs designed to teach you how to use StatCrunch. Later in the course, you will work on more complex labs where you will apply the StatCrunch skills you learned in these early mini-labs.
Progress Check
Use this activity to assess whether you and your peers can:
Select an appropriate bin width for a histogram and explain your choice.
Use a histogram to describe the shape, center, and spread of a distribution of data.
Directions
Use the drop-down menu to learn about the three steps needed to complete this assignment.
Three steps to complete the assignment
Context
We will use our unique IAT data sets to learn how to create a histogram using StatCrunch. We will also practice what we’ve learned about describing a histogram. We are interested in describing the distribution of IAT participants’ ages when they took the IAT test.
Data
All directions in this assignment open in a new tab. my account username is: Aiyah.Abdullah password:Abdullah_2008
Login and open StatCrunch (directions).
Open your IAT sample data set in StatCrunch (directions).
Create a histogram of the ages of the IAT participants (directions).
Download the StatCrunch output window, your histogram (directions).
Prompt
In your initial post, respond to the following prompt. But first, be sure to complete the work in the Data section above.
Question 1
Describe the distribution of IAT participants’ ages in your sample. Your description should include: shape, center, spread, a typical interval of representative ages, and any apparent outliers (unusual ages). Be sure to embed your histogram in the textbox along with your response – and include the Alt Text (directions). Please do not submit your histogram as an attachment.
Question 2
Create a second histogram for the distribution of ages, and adjust the bin width (directions). Try both smaller and larger bin widths. Choose a bin width so that your second histogram does not look like the first. Also, embed your second histogram in the textbox with your response. Indicate which histogram is better for analyzing the data (your first embedded histogram or your second). Explain why.
Question 3
Your random sample was obtained from the population of participants for your chosen IAT data set. Based on the histogram from your random sample, how would you describe the population of participants for your chosen IAT data set? Do you think the IAT population is similar to the U.S. population?
List of StatCrunch Directions
Click here for StatCrunch Directions
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
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 LicenseLinks to an external site..
Rubric
Formative Assessments w/ StatCrunch
Formative Assessments w/ StatCrunch
CriteriaRatingsPts
This criterion is linked to a Learning OutcomeAnswering the Prompt
8 ptsFull Credit
The first submission demonstrates a good-faith effort to address each part of the Prompt. Either in the first draft or the optional final draft, 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 correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow.
6.5 ptsMostly Correct
The first submission demonstrates a good-faith effort to address most of the Prompt. In the optional final draft 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.
3.5 ptsOne or more incorrect
The first submission demonstrates a good-faith effort to respond to a smaller portion of the Prompt. In the first draft or the optional final draft, 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 first submission does not demonstrate a good-faith effort to address the Prompt.
8 pts
This criterion is linked to a Learning OutcomeStatCrunch
2 ptsFull Credit
StatCrunch graphs and/or tables are correct and embedded with your work.
1 ptsPartial Credit
StatCrunch graphs and/or tables are incorrect or missing important information.
0 ptsNo Credit
No StatCrunch information is embedded with your post. Or all StatCrunch work is incorrect.
2 pts
Total Points: 10

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