MATH302 D005 Fall 2023 - W2HW1

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Ashford University *

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302

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Statistics

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Jan 9, 2024

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Week 2 Knowledge Check Homework Practice Que… Attempt 1 of 4 Written Dec 16, 2023 3:13 PM - Dec 16, 2023 4:16 PM Attempt Score 16 / 20 - 80 % Overall Grade (Highest Attempt) 20 / 20 - 100 % Question 1 1 / 1 point ___ 1.48___ Hide ques±on 1 feedback Question 2 1 / 1 point 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 sample mean. Round to two decimal places. Use the Excel function to find the Average. use =AVERAGE function in Excel.

A sample of 8 cats found the following weights in kg. What is the standard deviation? See Attached Excel for Data. Use the Excel function to find the Sample SD. cat weight data.xlsx Hide ques±on 2 feedback Question 3 1 / 1 point ___ 167.0___ Question 4 1 / 1 point The length of the box in the boxplot portrays the 0.295 0.087 0.9 0.275 0.104 use =STDEV.S function in Excel. 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 Standard Deviation: Calculate the standard deviation. Round to one decimal place. Use the Excel function to find the Sample SD.

Hide ques±on 4 feedback Question 5 1 / 1 point Which of the following statements are false regarding a boxplot? Question 6 1 / 1 point Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars. Complete the table. Data Value (# cars) Frequency Relative Frequency Percent Cumulative Relative Frequency 3 14 21.5% interquartile range mean range median IQR = Q3 - Q1 The right and left of the box are the third and first quartiles The length of the box equals the range of the data. Boxplots can be used to either describe a single variable in a data set or to compare two (or more) variables The height of the box has no significance.

4 19 29.2% 5 12 18.46% 6 9 13.8% 7 11 16.9% What does the Frequency column in the table sum to? Hide ques±on 6 feedback Question 7 1 / 1 point A histogram that has a single peak and looks approximately the same to the left and right of the peak is called: Question 8 1 / 1 point 65 25 19.8 14 14 + 19 + 12 + 9 + 11 symmetric bimodal balanced proportional

___ 6.55___ Hide ques±on 8 feedback Question 9 1 / 1 point The following data show the amount (in ounces) of beverage in randomly selected 16-ounce beverage cans. See Attached Excel for Data. ounces data.xlsx The mode of this data is Hide ques±on 9 feedback 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 The median time students sleep per night is hours. Do not Round. use =MEDIAN function in Excel. 15.8 15.6 16.1 no mode 15.7 The value that appears most often is 15.7

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