Jamovi HW2

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University of Oregon *

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302

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Statistics

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Feb 20, 2024

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Uploaded by ProfessorEnergyDinosaur33

Jamovi Homework 2 6 points Problem 1 Naomi is interested in the amount of television that preschoolers watch at home during the weekends. She asks the parents of 12 preschoolers how many hours, on average, their children spend watching TV every weekend. She wants to know how much TV each of the children watch relative to other children in the group. To get this information, she needs to convert the number of hours of TV watched into z-scores. She would also like to view a graphical representation of the distribution. These raw scores are presented to the right. Please use jamovi to complete your homework. You can load these data from the tv.csv file or type them in manually. 1) Use jamovi to generate z-scores for these data. Provide a screenshot of your data view showing these z -scores. (1 point) 2) Paste a histogram of both the raw data and the z-score transformed data. (1 point) How would you describe the shape of each distribution? (1 point) How does the shape of the two distributions compare to one another? (1 point) Both curves are bell shaped with a tail on the left side of each curve and are approximately normally distributed. The TV Z-scores and TV hours share the same shape and display the same TV watch 1 7 6 5 6 5 8 4 4 5 2 5

amount of density (y-axis), while the scores/hours differ on the x-axis, but create the same curve shape. 3) What is the z-score for a preschooler who watched 4 hours of TV in this sample? (1 point) Z-score= -0.428 4) How would you describe the TV watching habits of a preschooler who watched 4 hours of TV, given what you know about this sample? (1 point) The z-score indicates that is is -0.428 standard deviations away from the mean.

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