VCU STAT 210  Test 2 Practice Test #2 (3 pages)
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Test 2 Practice Test #2
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 3
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 Virginia Commonwealth University
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 Stat 210  Basic Practice of Statistics
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Test 2 Practice Test 2 One of the most popular activities for tourists visiting Hawaii is snorkeling where it is possible to see an assortment of fish turtles eels octopi and other sea creatures A random sample of 24 tourists who visited Hawaii during 2014 and who snorkeled while there was selected and each tourist was asked the number of turtles that they saw while snorkeling The responses are given below Use this information to answer questions 1 through 9 For the problems requiring calculations you can use the calculator or you can choose to do the problems by hand in which case any work you show will be considered for partial credit 5 8 1 0 2 12 7 18 5 6 22 11 0 3 0 26 6 3 1 Based on the information above what is the population of interest 2 Consider the data above Construct an appropriate stem and leaf plot to graphically display this data 3 Calculate the mean of the data 4 Is the value for the mean calculated in question 3 denoted by or A B X 0 47 12 18 0 4 X The data for the number of turtles that the tourists saw while snorkeling for the sample of 24 tourists is repeated below 5 8 1 0 2 12 7 18 5 6 22 11 0 3 5 Calculate the median of the data 6 Calculate the range of the data 7 Calculate the standard deviation of the data 8 Calculate the interquartile range of the data 9 0 26 6 3 0 47 12 18 0 4 Consider the stem and leaf plot constructed in question 2 and the calculations made in questions 3 5 6 7 and 8 Use this information to completely describe the distribution of the number of turtles that the tourists saw while snorkeling for the sample of 24 tourists For questions 10 through 12 use the choices below and list the letters of all choices that meet the description it is possible for there to be more than one correct choice per statement A Median B Mean C Range D Interquartile Range E Standard deviation F Boxplot G Histogram H Pie chart I Bar graph J Stem and leaf plot 10 A graphical procedure that can be used to display qualitative data 11 A measure of
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