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Jan 9, 2024

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Attempt Score 19 / 20 - 95 % Overall Grade (Highest Attempt) 19 / 20 - 95 % Question 1 1 / 1 p 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 median. Round to one decimal place. Use the Excel function to find the Median. Median: ___1814.5 ___ estion 1 feedback EDIAN function in Excel n 2 1 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 Use the Excel function to find the First Quartile First Quartile: ___1702.5 ___ Calculate the first quartile. Round to one decimal place. estion 2 feedback UARTILE.INC( , 1) function in Excel. n 3 1 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)

estion 3 feedback EDV.S function in Excel. n 4 1 For a boxplot, the box itself represents what percent of the observations? 100% lower 25% middle 50% upper 75% Hide question 4 feedback The box is the middle 50% and then 25% on either side of the box. 25% + 50% + 25% = 100% 5 0 To determine if Reiki is an effective method for treating pain, a pilot study was carried out where a certified second-degree Reiki therapist provided treatment on volunteers. Pain was measured using a visual analogue scale (VAS) immediately before and after the Reiki treatment (Olson & Hanson, 1997). Higher numbers mean the patients had more pain. Use the box-and-whiskers plots to determine the IQR for the before treatment measurements. Enter your response in the space below. Do Not Round. IQR= ___3.75 ___ (4)

estion 5 feedback Q3 - Q1 and Q1 = 2 n 6 1 Suppose that a histogram of a data set is approximately symmetric and bell shaped. Approximately what percent of the observations are within one standard deviation of the mean? 95% 50% 99.7% 68% Question 7 1 / 1 point A histogram that is positively skewed is also called skewed to the left skewed to the right symmetric balanced Question 8 1 / 1 point The median can also be described as: the middle observation when the data values are arranged in ascending order the second quartile the 50th percentile all of the above Question 9 1 / 1 point The following histogram shows the number of enrollment in 40 community colleges. The shape of this distribution is:

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left skewed (skewed negative right skewed (skewed positive) symmetric Question 10 1 / 1 point The following data show the height (in inches) of a sample of students. See Attached Excel for Data. height data.xlsx The median height of these students is ___64 ___ inches. Do Not Round. estion 10 feedback EDIAN function in Excel. n 11 1 The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the median. See Attached Excel for Data. river length data.xlsx

56 km 65.18 km 67.68 km 66.34 km 64 km Hide question 11 feedback use =MEDIAN function in Excel use =MEDIAN function in Excel 12 1 Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr, 1985). Use Excel to find the 25th percentile. Round your answer to one decimal place. See Attached Excel for Data. cholesterol data.xlsx Answer= ___225.5 ___ Hint: Use =PERCENTILE.INC function in Excel. Retrieved from http://www.statsci.org/data/general/cholest.html . estion 12 feedback ERCENTILE.INC( , .25) in Excel. n 13 1 The following data show the average time (in hours) that a random sample of 8 students sleep per night. See Attached Excel for Data. sleep hours data.xlsx Use the Excel function =PERCENTILE.INC to find the Percentile. The 81st percentile of time students sleep per night is ___8.1 ___ hours. Round to 1 decimal place. estion 13 feedback ERCENTILE.INC( , .81) in Excel. n 14 1 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 ___83.16 ___ (50 %) The 62nd percentile of final grades for the face-to-face class is ___88.16 ___ (50 %) . estion 14 feedback RCENTILE.INC( , .62) in Excel. n 15 1 Eyeglassomatic manufactures eyeglasses for different retailers. The number of lenses for different activities is in table. Activity Grind Multicoat Assemble Make Frames Receive Finished Unknown Number of lenses 18872 12105 4333 25880 26991 1508 Grind means that they ground the lenses and put them in frames, multicoat means that they put tinting or scratch resistance coatings on lenses and then put them in frames, assemble means that they receive frames and lenses from other sources and put them together, make frames means that they make the frames and put lenses in from other sources, receive finished means that they received glasses from other source, and unknown means they do not know where the lenses came from. Based on the information above, which is the correct Pareto Chart?

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Question 16 1 / 1 point The following table summarizes the proportion of people who prefer different food for lunch.

Lunch Choices Proportion Mac 'n Cheese 0.24 Sandwich 0.36 Soup 0.28 Hamburger 0.08 Chicken Nuggets 0.04 Select the correct bar graph for the distribution of people by their lunch choice.

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Question 17 1 / 1 point The following scatterplot shows the hours studied for an exam and the grade for a sample of students. What is the relationship between the variables displayed in the scatterplot?

Negative No trend Positive Hide question 17 feedback The trend is moving upward in a positive direction 18 1 When an anthropologist finds skeletal remains, they need to figure out the height of the person. The height of a person (in cm) and the length of one of their metacarpal bone (in cm) were collected and shown in the table below. Create a scatter plot using Excel. height and length data.xlsx What type of a relationship, if any, exists between the height of a person and the length of their metacarpal? (2013, September 26). Retrieved from http://www.statsci.org/data/general/stature.html .

Length of Metacarpal Height of Person 45 171 51 178 39 157 41 163 48 172 49 183 46 173 43 175 47 173 Positive No relationship Negative Question 19 1 / 1 point An instructor had the following grades recorded for an exam. What is the value of the missing leaf? Exam Grades: 96 66 65 82 85 82 87 76 80 85 83 69 79 70 83 63 81 94 71 83 99 75 73 83 86

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6 3 5 6 9 7 0 1 3 5 6 9 8 0 1 2 2 3 3 3 3 5 5 6 7 9 4 (a) 9 (a): ___6 ___ estion 19 feedback ssing, thus the missing leaf is 6 n 20 1 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): ___8 ___ (33.3 %) (b): ___257889 ___ (33.3 %) (c): ___011 ___ (33.4 %)

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