STAT 151 STUDY DOCUMENT PRACTISE LAB FINAL QUIZ 1 NUSRAT

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University of Alberta *

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151

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Statistics

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Feb 20, 2024

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LAB QUIZ 1 REVIEW Question 1 C1 Q1 V1: The survey data STATISTICSSTUDENTSSURVEYFORR contains several columns. Identify the type of variable in the column FEDBEST, a variable that measures which Federal political party students think had the best platform (Conservative, Green, Liberal, NDP). Answer qualitative categorical (non-ordinal) qualitative categorical (ordinal) quantitative numerical discrete quantitative numerical continuous Question 2 C1 Q2 V1: The survey data STATISTICSSTUDENTSSURVEYFORR contains several columns. Identify the type of variable in the column FEDVOTE, a variable that measures which Federal political party students will vote for (Conservative, Green, Liberal, NDP). Answer qualitative categorical (non-ordinal) qualitative categorical(ordinal) quantitative numerical discrete quantitative numerical continuous Question3 C2 Q1 V1 The survey data STATISTICSSTUDENTSSURVEYFORR contains several columns. Use R to calculate the counts of the outcomes in the ALBBEST column. Which of the following statements is most correct? The mode of the outcomes of the variable ALBBEST is NDP. The mode of the outcomes of the variable ALBBEST is 29. The mode of the outcomes of the variable ALBEST is 48.33%. The mode of the outcomes of the variable ALBBEST cannot be determined. Command: TALLY COUNTS AND PERCENTS Statistics > Summaries > Frequency Distributions Variables (pick one or more): ALBBEST Apply, OK Output 1

LAB QUIZ 1 REVIEW The highest count occurs for the outcome of NDP Question4 Answer C2 Q5 V1 The survey data STATISTICSSTUDENTSSURVEYFORR contains several columns. Use R to calculate the percentages of the outcomes in the ALBBEST column. Which of the following statements below is FALSE? An observation in the ALBBEST data can take on one of 4 possible outcomes (choices percent of data that is NDP is 48.33%, and the percent of data that is not NDP is 51.6 The number of observations in the ALBBEST column is 60, the percent of data that is 48.33%, and the percent of data that is not NDP is 51.67% An observation in the ALBBEST data can take on one of 60 possible outcomes (choice count of NDP in the ALBBEST column is 29, and the percent of data that is NDP is 48. The count of NDP in the ALBBEST column is 29, the percent of data that is NDP is 48. and the percent of data that is not NDP is 51.67% Command: TALLY COUNTS AND PERCENTS 1b) Statistics > Summaries > Frequency Distributions Variables (pick one or more): ALBBEST Apply, OK Total count = 5+5+29+21 = 60 Percent NDP = 48.33% Percent not NDP = 100% -48.33% = 51.67% Question 5 C2 Q3 V1 The survey data STATISTICSSTUDENTSSURVEYFORR contains the column FAAGESTUDBIRTH which is a variable that measures the age of students' fathers when students were born. Use R to make a histogram to describe the data. Choose the most correct answer to describe what you see in the shape of the data distribution. Answer symmetric left skewed right skewed uniform 2

LAB QUIZ 1 REVIEW Command : 6) Graphs > Histogram Variable (pick one): FAAGESTUDBIRTH Options: Frequency counts x-axis label: Agey-axis label: FREQUENCY Graph Title: ………… .. Apply, OK Output Question6 Answer C2 Q4 V1 The survey data STATISTICSSTUDENTSSURVEYFORR contains the column FAVSPORTWATCH which is a variable that measures the favourite sports that students like to watch (baseball, football, hockey, tennis). Use R to make an appropriate chart for this column. Indicate which of the following statements in most correct. The mode of FAVSPORTWATCH is tennis, and the mean of FAVSPORTWATCH is 15. The mode of FAVSPORTWATCH is tennis, and the mean of FAVSPORTWATCH canno 3

LAB QUIZ 1 REVIEW calculated. The mode of FAVSPORTWATCH is 21, and the mean of FAVSPORTWATCH is 15. The mode of FAVSPORTWATCH is 21, and the mean of FAVSPORTWATCH cannot be calculated. Command: TALLY COUNTS AND PERCENTS Statistics > Summaries > Frequency Distributions Variables (pick one or more): FAVSPORTWATCH Apply, OK Output The most common occurring sport is tennis, with a 21 count. Since the data is categorical, the mean (a number) cannot be calculated. Question7 Answer C3 Q1 V1: The survey data STATISTICSSTUDENTSSURVEYFORR contains the column FAAGESTUDBIRTH (a variable that measures father's age at student birth in years) and the column BAORBS (a variable that measures whether the student is pursuing a BA or a BS). Indicate which of the following statements is most correct. The BA group has 2 outliers and the BS group has 3 outliers. The outlier FAAGESTUDBIRTH data values in the BA group are 29 years and 37 years. The outlier FAAGESTUDBIRTH data values in the BS group are 32 years, 27 years, and 2 years. The range for the BA group is wider than the range for the BS group. SIDE BY SIDE BOXPLOTS Command: Graphs > Boxplot Variable (pick one): FAAGESTUDBIRTH Plot by Groups: BAORBS OK Options: x-axis label: Degree 4