Assignment 1_ Winter 2024 Applied Statistics I

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Canada College *

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Statistics

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May 21, 2024

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1/10/24, 2:23 AM Assignment 1: Winter 2024 Applied Statistics I https://nsu.instructure.com/courses/2520401/quizzes/5251517 1/11 * Some questions not yet graded Assignment 1 Due Jan 14 at 11:59pm Points 18 Questions 18 Time Limit None Instructions Attempt History Attempt Time Score LATEST Attempt 1 156 minutes 8 out of 18 * Score for this quiz: 8 out of 18 * Submitted Jan 10 at 2:27am This attempt took 156 minutes. Please complete the answers for Assignment 1. There a multiple choice and short answer questions. Also, there are some questions which require you to upload an image of a graph or table you create. In this case, please upload a .jpg or PDF of the image. Not yet graded / 1 pts Question 1 Your Answer: a. What type of research question (i.e., descriptive, comparative, relationship) is being asked by the researchers? Briefly explain your answer. The research question in this study is comparative. The researchers are examining the effect of drawing a happy face on customers' assessments on the amount of guidelines acquired through a waitress. They are evaluating the top chances between the control group (no happy face) and the experimental group (happy face) to evaluate the impact of the drawing on tipping behavior.

1/10/24, 2:23 AM Assignment 1: Winter 2024 Applied Statistics I https://nsu.instructure.com/courses/2520401/quizzes/5251517 2/11 1 / 1 pts Question 2 What were the independent and dependent variables in the study? IV = Group; DV = Percent Correct! Correct! IV = Percent; DV = Group IV = Percent; DV = Percent IV = Group; DV = Group 1 / 1 pts Question 3 What is the level of measurement for the independent and dependent variables? IV = nominal; DV = ratio Correct! Correct! IV = ratio; DV = nominal IV = rank/order; DV = ratio IV = ratio; DV = ratio Not yet graded / 1 pts Question 4

1/10/24, 2:23 AM Assignment 1: Winter 2024 Applied Statistics I https://nsu.instructure.com/courses/2520401/quizzes/5251517 3/11 Your Answer: Before performing data analyses, make a prediction about the pattern of results you expect to see and why. That is, which condition do you think will result in the highest percentage of tips, on average? Why? Note: don’t base your prediction on the data itself, rather your expectations going into the study. That is, before you collect any data, what would you expect to see? Before appearing data analyses, one would possibly expect that the experimental group (customers receiving assessments with a happy face) can have a higher common percentage of tips in comparison to the control group (customers receiving checks without a happy face). This prediction may be based on the expectation that a advantageous and quality gesture, consisting of a satisfied face, would possibly have an impact on customers' perceptions and lead to an boom in tipping behavior. 1 / 1 pts Question 5 Calculate the mean, median, and mode for the experimental group. Mean = 33.05; Median = 28.50; Mode = 21, 24, 27, 33 Correct! Correct! Mean = 32.05 Median = 28.70 Mode = 24, 27, 33 Mean = 23.05 Median = 28.50 Mode = 21, 24, 27 Mean = 33.05 Median = 28.0 Mode = 21, 27, 33 1 / 1 pts Question 6

1/10/24, 2:23 AM Assignment 1: Winter 2024 Applied Statistics I https://nsu.instructure.com/courses/2520401/quizzes/5251517 4/11 Examine the values for the mean and the median. Based on these values, what shape of distribution would you expect to see? Briefly explain your rationale. The distribution would likely have a positive skew to it. Correct! Correct! The distribution would likely have a negative skew to it. The distribution would likely have a correlated skew to it. The distribution would likely have a neutral skew to it. Not yet graded / 1 pts Question 7 Your Answer: Suppose you had to explain the standard deviation value in the previous question to someone who has not taken a statistics course. In a sentence or two, write your explanation. The standard deviation measures the quantity of variation or spread in the tip percentage. Here higher standard deviation indicates that the tip amounts numerous extra widely from the average, suggesting extra variety in customers' tipping conduct, possibly encouraged by way of the presence or absence of a satisfied face on their checks. 0 / 1 pts Question 8 How would you characterize the variability of the tips? That is, do you feel the variability is high, moderate, or low? Briefly explain your rationale.

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