10. Check that random assignment to the chapters was successful.

May 21, 2025, 3:29 PM

chapter_study_1.xlsx

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The dataset from the Excel file chapter_study_1.xlsx has been successfully loaded. Here is a preview of the first few rows:
  • Start Date: The date and time when the study started.
  • End Date: The date and time when the study ended.
  • Progress: The progress percentage of the study.
  • Duration (in seconds): The duration of the study in seconds.
  • Finished: Indicates whether the study was finished.
  • Recorded Date: The date and time when the data was recorded.
  • Response ID: Unique identifier for each response.
  • Consent: Indicates whether consent was given.
  • Stood Out: Text describing what stood out in the study.
  • Social Political Ideology: A numerical representation of social political ideology.
  • State: The state where the participant is from.
  • Vehicle Types: Types of vehicles owned.
  • Voter Registration USA: Indicates voter registration status.
  • YOB: Year of birth.
  • YOB and Gender of Children: Year of birth and gender of children.
  • ZIP: ZIP code.
  • Character Identification: Numerical representation of character identification.
The dataset contains 89 columns in total. If you have any specific questions or need further analysis, feel free to ask!

how many rows are in the dataset?

The dataset contains 1,203 rows. If you have any more questions or need further analysis, feel free to ask!

There are 1203 responses in this dataset and there are 8 different possible values for chapter. Determine the expected count of instances per chapter if random assignment to each chapter had been perfect. Next, run a chi-square test to determine whether the actual count of each instance of chapter suggests that random assignment was successful.

The expected count of instances per chapter, assuming perfect random assignment, is 150.375.
The chi-square test results are as follows:
  • Chi-square statistic: 4.65
  • p-value: 0.70
Since the p-value is quite high (greater than 0.05), we fail to reject the null hypothesis. This suggests that there is no significant difference between the observed and expected frequencies, indicating that the random assignment to each chapter was likely successful.
If you have any further questions or need additional analysis, feel free to ask!
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