{"id":8626,"date":"2025-11-09T13:43:50","date_gmt":"2025-11-09T18:43:50","guid":{"rendered":"https:\/\/danlemay.net\/wordpress\/?p=8626"},"modified":"2025-11-09T13:43:50","modified_gmt":"2025-11-09T18:43:50","slug":"practice-exam-1","status":"publish","type":"post","link":"http:\/\/danlemay.net\/wordpress\/?p=8626","title":{"rendered":"Practice Exam 1"},"content":{"rendered":"

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Claiming one of these questions and making a post in the Practice Exam Forum explaining your work and an answer will earn you 5 bonus points on\u00a0 Exam 1 (both parts together are worth 200 points) if you make your post by some due date<\/strong><\/em><\/p>\n

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Click Edit and add your name to the left-hand column of the problem you are choosing to complete. (A couple of these questions are dated now. Sorry about that.)<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Practice exam<\/caption>\n
Problem: Claimed by<\/th>\nThe problem you will complete<\/th>\n<\/tr>\n
1.<\/p>\n

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2.<\/p>\n

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3.<\/td>\n <\/p>\n

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4.<\/p>\n

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Joe Fadabucci of East Podunk, VT was sick and tired of cars speeding by his house. He need some data to support his case for the installation of a radar speed feedback sign\u00a0 to slow down traffic. He recorded the speed of cars driving past his house, where the speed limit is 20 mph. It is a random sample.<\/p>\n

\"Problem<\/p>\n

What shape does this distribution have?<\/p>\n

Which measure of center should we use to describe the “center”, the mean or the median? Why? (Think about the shape)<\/p>\n

What measure of spread should we use to describe this distribution? Why? (Think about the shape)<\/p>\n

Which outlier test should we use to check for outliers> Show us and determine if there are any outliers.<\/p>\n

Does this data support his case? Explain.<\/td>\n<\/tr>\n

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5.<\/p>\n

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\"Problem<\/td>\n<\/tr>\n

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6.<\/p>\n

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7.<\/p>\n

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8.<\/p>\n

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9.<\/p>\n

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10.<\/p>\n

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Here is a data set. Excel <link<\/a>> Google Sheets <link<\/a>> You’ll either need to “Make a copy” for Google Sheets or download a copy and open it in Excel\/Numbers\/Open Office.<\/p>\n

Find the country that represents the 70th percentile<\/p>\n

Find the country that represents the 30th percentile.<\/p>\n<\/td>\n<\/tr>\n

11.<\/p>\n

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\"Problem<\/td>\n<\/tr>\n

12.<\/p>\n

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Complete the empty (green) spaces in this table for calculating the standard deviation for a small data set. Remember that the formula for a sample standard deviation is \"LaTeX:<\/p>\n

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Make sure to explain how you know.<\/td>\n<\/tr>\n

13.<\/p>\n

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\"Problem<\/p>\n

What conclusions can we draw? Connect your response to what we are seeing in these boxplots.<\/td>\n<\/tr>\n

14.
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I had a 1968 Ford Mustang as a HS student. I’d like another one. Pricing out a dealership in Plymouth NH and one in Miami FLA, I find<\/p>\n

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Complete the following statements (show the calculations also)<\/p>\n

A Mustang in NH cost _________%\"LaTeX:than the cost in Miami<\/p>\n

A Mustang in Miami cost _________%\"LaTeX:than the cost in NH<\/p>\n

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15.<\/td>\nHere is a histogram and summary statistics of the distribution of a sample of Cruise Ships Customer Satisfaction Scores<\/p>\n

\"\"<\/a><\/p>\n

What shape does this distribution have?<\/p>\n

Which measure of center should we use to describe the “center”, the mean or the median? Why? (Think about the shape)<\/p>\n

What measure of spread should we use to describe this distribution? Why? (Think about the shape)<\/p>\n

Which outlier test should we use to check for outliers> Show us and determine if there are any outliers.<\/p>\n

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16.<\/p>\n

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Comment on the correctness of this graph by writing a couple of sentences.:<\/span><\/p>\n

\"Problem<\/td>\n<\/tr>\n

17.<\/p>\n

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Calculate the five number summary and the mean for the data in #4.<\/p>\n

Suppose we change the 480 to 350. Which will change more: The median or the mean? why?<\/td>\n<\/tr>\n

18.<\/p>\n

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\"Problem<\/td>\n<\/tr>\n

19.<\/td>\nHere is a histogram and summary statistics of the distribution of a sample of movie run times<\/p>\n

\"\"<\/a><\/p>\n

What shape does this distribution have?<\/p>\n

Which measure of center should we use to describe the “center”, the mean or the median? Why? (Think about the shape)<\/p>\n

What measure of spread should we use to describe this distribution? Why? (Think about the shape)<\/p>\n

Which outlier test should we use to check for outliers> Show us and determine if there are any outliers.<\/p>\n

 <\/td>\n<\/tr>\n

20.<\/td>\nIn the Super Bowl, by how many points does the winning team outscore the losers? Here are the winning margins (From Superbowl History from ESPN<\/a><\/p>\n

Here is a spreadsheet of the winning margins for Super Bowl games including 2023. <A spreadsheet of the Superbowl data from ESPN<\/a>><\/p>\n

I’m assuming\/hoping that you are using technology to do this.<\/p>\n

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  1. Find the five number summary.<\/li>\n
  2. Make a histogram<\/li>\n<\/ol>\n

    c). What shape does this distribution have?<\/p>\n

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    1. Are there any outliers? How do you know? What outlier test should you run. (I need to see the fences and how you found them.<\/li>\n
    2. Construct a boxplot of the data.<\/li>\n<\/ol>\n

       <\/p>\n

       <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

        Claiming one of these questions and making a post in the Practice Exam Forum explaining your work and an answer will earn you 5 bonus points on\u00a0 Exam 1 (both parts together are worth 200 points) if you make your post by some due date   Click Edit and add your name to the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8626","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8626"}],"version-history":[{"count":1,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8626\/revisions"}],"predecessor-version":[{"id":8631,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8626\/revisions\/8631"}],"wp:attachment":[{"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8626"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/danlemay.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}