Quiz 2 Attempt 2

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American Military University *

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302

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Geography

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Dec 6, 2023

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docx

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19

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Question 1 0 / 1 point The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to find the Variance. river length data.xlsx 32.52 1057.58 7.10 33.29 1107.94 Hide question 1 feedback use =VAR.S function in Excel. use =VAR.S function in Excel. Question 2 1 / 1 point An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. final grade data.xlsx Use the Excel function to find the Sample SD. The standard deviation of final grades for the online class is ___ 7.83 ___
Use the information to respond to the following question: (round to 2 decimal places) Hide question 2 feedback use =STEDV.S function in Excel. Question 3 1 / 1 point The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The data are reported here. See Attached Excel for Data. FTES data.xlsx Calculate the Sample Variance. Round to two decimal places. Use the Excel function to find the Sample Variance. Variance: ___ 27901.07 ___ Hide question 3 feedback use =VAR.S( ) function in Excel. Question 4 1 / 1 point Given the following boxplot where m is the median value, what statement could be made about the distribution of the data?
The distribution is positively skewed. The distribution is approximately symmetric. No statement can be made about the data because no data values are shown on the plot. The distribution is negatively skewed. Question 5 1 / 1 point Santa Clara County, CA, has approximately 27,873 Japanese-Americans. Their ages are as follows : Age Group Percent of Community 0-17 18.9 18-24 8.0 25-34 22.8
35-44 15.0 45-54 13.1 55-64 11.9 65+ 10.3 Which box plot most resembles the information above? A
Question 6 1 / 1 point Suppose one hundred eleven people who shopped in a special t-shirt store were asked the number of t-shirts they own costing more than $19 each. The percentage of all people who own at most three t-shirts costing more than $19 each is approximately: Cannot be determined
20.7% 40.5% 59% Hide question 6 feedback 23 + 17 + 5 = 45 45/111 Question 7 1 / 1 point The following data represents the grades in a statistics course. Below is the frequency distribution and histogram.
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