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WGU C955 - Module 4: Descriptive Statistics for a Single Variable, Top Exam Questions and answers, graded A+

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WGU C955 - Module 4: Descriptive Statistics for a Single Variable, Top Exam Questions and answers, graded A+ If 200 people are surveyed, how many claim to have had no exercise? {{ Pie chart reflecting the average number of hours exercised per week. No exercise 36%, 1 - 2 hours 28%, 3 - 4 hours 12%, 4 - 5 hours 10%, 5 - 6 hours 8%, 6 - 7 hours 4%, more than 7 hours 2%. }} a 18 b 36 c 72 d Cannot determine - ✔✔-72 Determine the range for the following data set. {1,24,26,28,32,36,38,40,65} a 1 to 65 b 64 c 65 d Cannot determine - ✔✔-64 It is important to start the frequency scale on a bar chart at which value to be certain not to overemphasize a difference in values? a Zero b The lowest measured value c The smallest frequency d As long as the scale is even, it doesn't matter where you start it. - ✔✔-Zero If 80 people exercised 4 - 5 hours per week, how many people were surveyed? {{ Pie chart reflecting the average number of hours exercised per week. No exercise 36%, 1 - 2 hours 28%, 3 - 4 hours 12%, 4 - 5 hours 10%, 5 - 6 hours 8%, 6 - 7 hours 4%, more than 7 hours 2%. }} a 80 b 800 c 400 d 50 - ✔✔-800 You are a professional trainer at a local sports academy. You ask your athletes to determine the number of grams of protein they consume for a particular meal. Which of the following would be the best choice to illustrate the shape of the data you collect? a Bar chart b Pie chart c Box plot d None of the above - ✔✔-Box plot What is the most significant difference between histograms and bar charts? a The number of bars used b The use of labels on the axes c The type of data depicted in the graph d The coloring used for each bar - ✔✔-The type of data depicted in the graph Of the following sets of data, which would you assume should have the greatest range? a Age when a baby gets their first tooth b Age of first-year business students c Age of death d Age of high school graduate - ✔✔-Age of death Determine any outliers in the following data set. {1,24,26,28,32,36,38,40,65} a 1 b 65 c A and B d None - ✔✔-A and B Determine the interquartile range ( IQR ) for the following set of diagnostic test scores. {60,47,65,85,81,77,70,56,47,84,75} a 25 b 57 c 68 d 80 - ✔✔-25 Stem plots display which type of data? a Quantitative b Categorical c Neither Quantitative nor categorical d Quantitative and categorical - ✔✔-Quantitative Determine the median for the following set of diagnostic test scores.{60,47,65,85,81,77,70,56,47,84,75} a 67 b 70 c 47 d 67.9 - ✔✔-70 Determine Q3 for the sorted list of data values. {3,8,8,10,16,20,20,23,27,37,44,45,62,71} a 27 b 37 c 44 d 45 - ✔✔-44 The bitrate of audio files in a sample group of files ranged from 160 kilobytes per second (Kbps) to 256 kilobytes per second (Kbps). What percentage of the audio files will fall within 2 standard deviations of the mean? Assume the data is normally distribute

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