Week 2 Test Results for MATH302: Statistics Insights

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 1/12 Week 2 Test - Results Attempt 1 of 2 Written Mar 15, 2024 3:07 PM - Mar 15, 2024 4:01 PM Attempt Score 20 / 20 - 100 % Overall Grade (Highest Attempt) 20 / 20 - 100 % Question 1 1 / 1 point ___ 27901.07___ Hide ques±on 1 feedback Question 2 1 / 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 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: use =VAR.S( ) function in Excel. 7.10 1057.58 32.52 33.29 1107.94

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 2/12 Hide ques±on 2 feedback Question 3 1 / 1 point ___ 1.12___ Hide ques±on 3 feedback 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? Question 5 1 / 1 point Santa Clara County, CA, has approximately 27,873 Japanese-Americans. Their ages are as follows : use =VAR.S function in Excel. use =VAR.S function in Excel. Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows: See Attached Excel for Data. movie data.xlsx Find the approximate sample standard deviation, s. Use the Excel function to find the Sample SD. Round to two decimal places. . use =STDEV.S function in Excel. The distribution is positively skewed. No statement can be made about the data because no data values are shown on the plot. The distribution is approximately symmetric. The distribution is negatively skewed.

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 3/12 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? Question 6 1 / 1 point The following data represents the grades in a statistics course. Below is the frequency distribution and histogram.

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3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 4/12 Class Limit Class Midpoint Frequency Relative Frequency 40 – 49.9 45 2 0.08 50 – 59.9 55 1 0.04 60 – 69.9 65 7 0.28 70 – 79.9 75 6 0.24 80 – 89.9 85 7 0.28 90 – 99.9 95 2 0.04 How many students were in the class? Hide ques±on 6 feedback 75 100 7 25 95 2+1+7+6+7+2

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 5/12 Question 7 1 / 1 point Match each word with the description. __ 2__ __ 1__ 1 . 2 . Question 8 1 / 1 point A sample of 8 cats found the following weights in kg. What is the mode weight? See Attached Excel for Data. cat weight data.xlsx Hide ques±on 8 feedback Question 9 1 / 1 point A sample of 8 cats found the following weights in kg. What is the mean weight? Do not round your answer. See Attached Excel for the Data. cat weight data.xlsx Hide ques±on 9 feedback frequency relative frequency shows the proportion of data points that have each value tells the number of data points that have each value 4.1 kg 3.2 kg No mode 0 kg 3.7 kg The value that appears most often is the mode, 3.7 The value that appears most often is the mode, 3.7 3.7 kg 3.9 kg 3.6875 kg 3.7125 kg

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 6/12 Question 10 1 / 1 point The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest. See Attached Excel for Data. boat length data.xlsx Identify the Mode. Hide ques±on 10 feedback Question 11 1 / 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 mode. See Attached Excel for Data. river length data.xlsx Hide ques±on 11 feedback Question 12 1 / 1 point use =AVERAGE function in Excel 25 27 25 and 27 25, 26 27 and 33 40 The mode is the length that appears the most frequently. There are two modes, 25 and 27, each appearing three times. 56 no mode 32 64 56 & 64 The two values that appear most often are 56 and 64.

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3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 7/12 ___ 280___ Hide ques±on 12 feedback Question 13 1 / 1 point ___ 83.16___ (50 %) ___ 88.16___ (50 %) Hide ques±on 13 feedback Question 14 1 / 1 point Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr , 1985). Use Excel to find the 68th percentile. Do Not include any decimals. See Attached Excel for Data. cholesterol data.xlsx Use the Excel function =PERCENTILE.INC to find the Percentile. Retrieved from http://www.statsci.org/data/general/cholest.html . Fill in each of the values below: 68th percentile Use Excel Functions =PERCENTILE.INC( ,.68) An instructor wants to compare the 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 Hint: Use =PERCENTILE.INC function in Excel. Compute the following percentiles and interpret them. (round to two decimal places) The 62nd percentile of final grades for the online class is The 62nd percentile of final grades for the face-to-face class is . Use PERCENTILE.INC( , .62) in Excel. The following data show the average time (in hours) that a random sample of 8 students sleep per night. See Attached Excel for Data.

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 8/12 ___ 8.1___ Hide ques±on 14 feedback Question 15 1 / 1 point The total frequency of the data whose ogive is shown below is approximately Hide ques±on 15 feedback Question 16 1 / 1 point The following data represents the percent change in tuition levels at public, four-year colleges (inflation adjusted) from 2008 to 2013 (Weissmann, 2013). Below is the frequency distribution and ogive. sleep hours data.xlsx Use the Excel function =PERCENTILE.INC to find the Percentile. The 81st percentile of time students sleep per night is hours. Round to 1 decimal place. Use =PERCENTILE.INC( , .81) in Excel. 34 12 90 18 The frequency count is along the y-axis.

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB=… 9/12 Class Limits Cumulative Frequency 2.2 – 11.7 6 11.8 – 21.3 26 21.4 – 30.9 37 31.0 – 40.5 41 40.6 – 50.1 43 50.2 – 59.7 45 59.8 – 69.3 48 69.4 – 78.9 50

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3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB… 10/12 Based on the information, how many colleges were sampled? Hide ques±on 16 feedback Question 17 1 / 1 point The Australian Institute of Criminology gathered data on the number of deaths (per 100,000 people) due to firearms during the period 1983 to 1997. The time-series plot is below. What year had the highest rate of deaths? Retrieved from http://www.statsci.org/data/oz/firearms.html . Hide ques±on 17 feedback 78 50 296 20 100 The cumulative value is 50 1983 1989 1997 1985 1985 along the x-axis has the highest peak along the y-axis.

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB… 11/12 Question 18 1 / 1 point A scatter plot would be useful for Question 19 1 / 1 point ___ 8___ (33.3 %) ___ 257889___ (33.3 %) ___ 011___ (33.4 %) Question 20 1 / 1 point Showing the relationship between the sales of blank CDs and blank DVDs Showing the trend of sales, over time, of five different brands of blank DVDs Showing the top selling brands of blank DVDs Showing the relative number of sales of four different brands of blank DVDs The following data show the amount (in ounces) of beverage in randomly selected 16-ounce beverage cans. Create a Stem-Leaf plot for these data. 15.8 16.1 15.2 14.8 15.8 15.9 16.0 15.5 16.1 15.7 Fill in the blanks of table below to complete the Stem-Leaf plot for these data. The key is 15|2 = 15.2. Sort the values for Leaf in increasing order and do not keep spaces or commas between leaves. Stem Leaf 14 15 16 (a) (b) (c) (a): (b): (c): The graph below is for pulse rates before and after exercise. Before Pulse Rates After 9 8 8 7 6 5 2 6 9 8 8 8 6 5 5 5 1 1 0 0 7 8 8 7 5 4 2 8 5 6 6 7 8 9 4 0 9 0 1 1 2 3 4 5 5 6 8 4 10 0 1 4 6 7 11 6 7

3/23/24, 12:03 PM Jaylen Quintana - MATH302 D003 Winter 2024 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=286342&ai=3211890&isInPopup=0&cfql=0&fromQB… 12/12 ___ 85___ Hide ques±on 20 feedback Done 12 4 5 8 What was the slowest pulse rate of the after exercise group? The Leaves on the right are for Before Exercise and the Leaves on the left are for After Exercise.

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W2- MATH302 D003 Winter 2024 - APEI

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