WK 2 Test

pdf

School

American Military University *

*We aren’t endorsed by this school

Course

302

Subject

Statistics

Date

Jun 12, 2024

Type

pdf

Pages

Uploaded by HighnessAtom2424

Week 2 Test Your work has been saved and submitted Written May 14, 2024 1:28 PM - May 14, 2024 2:31 PMAttempt 1 of 2 Attempt Score 18 /20-90% Overall Grade (Highest Attempt) 18 / 20-90% Question 1 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 Use the Excel function to find the First Quartile

First Quartile: ___1702.5___ Calculate the first quartile. Round to one decimal place. W Hide question 1 feedback use =QUARTILE.INC(, 1) function in Excel. 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 3329 O 3252 O 710 (O 1057.58 v ) 1107.94 W Hide question 2 feedback use =VAR.S function in Excel. use =VAR.S function in Excel.

Question 3 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 approximate sample standard deviation, s. Use the Excel function to find the Sample SD. Round to two decimal places. W Hide question 3 feedback use =STDEV.S function in Excel. Question 4 1 /1 point For a boxplot, the box itself represents what percent of the observations? () lower 25% () upper 75% v ) middle 50% ~ 100% W Hide question 4 feedback The box is the middle 50% and then 25% on either side of the box. 25% + 50% + 25% = 100%

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Question 5 1 /1 point 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. |QR= [bReiki Pain Treatment 10 3 = 8 . 7 o v 6 W b L £ 4 3 . ; L ‘ 1 L fi___ v After Before W Hide question 5 feedback IQR = Q3 - QI Q3 =6 and Q1 =2

Question 6 1 /1 point Match each word with the description. shows the proportion of data points that have each v/ __1__ relative frequency _ value v __2__ frequency 2. tells the number of data points that have each value Question 7 1 /1 point 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? 99.7% v ) 68% O 0% ) 95% Question 8 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 )37 Kg () 3.7125 kg

3.9k v ) 3.6875 kg W Hide question 8 feedback use =AVERAGE function in Excel Question 9 1 /1 point A sample of 8 cats found the following weights in kg. What is the median weight? See Attached Excel for Data. cat weight data.xlsx () 3.7125 kg () 3.9kg () 3.6875 kg v 3.7 kg W Hide question 9 feedback use =MEDIAN function in Excel use =MEDIAN function in Excel Question 10 1 / 1 point

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

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 Calculate the mean. Round your answer to one decimal place. W Hide question 10 feedback =AVERAGE function in Excel Question 11 1 /1 point The median can also be described as: O the middle observation when the data values are arranged in ascending order O the second quartile ) the 50th percentile v ) all of the above Question 12 1 /1 point 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___ v hours. Round to 1 decimal place. W Hide question 12 feedback Use =PERCENTILE.INC(, .81) in Excel. Question 13 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

W Hide question 13 feedback Use Excel Functions =PERCENTILE.INC(,.68) Question 14 0/ 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 Q3. Do not include any decimals. See Attached Excel for Data. cholesterol data.xlsx Use the Excel function =PERCENTILE.INC to find Q3. Retrieved from http://www.statsci.org/data/general/cholest.html . Fill in each the value below: W Hide question 14 feedback Use Excel Functions =PERCENTILE.INC(,.75)

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Question 15 1 /1 point The total frequency of the data whose ogive 1s shown below 1s approximately 40 v ) 34 O30 12 )18 W Hide question 15 feedback The frequency count is along the y-axis. Question 16 1 /1 point The following graph represents a random sample of car models driven by college students. What was the most common car model?

Type of Car Owned by College Students 14 12 10 l c 8 @ 3 1 @ b6 4 5 ‘ ‘ 0 Chevy Ford Honda Nissan Toyota Other Car Model () Both Nissan and Toyota () Other () Nissan . ) Chevy v ) Both Chevy and Toyota () Toyota () Both Honda and Nissan Question 17 1 /1 point A scatter plot would be useful for v ) Showing the relationship between the sales of blank CDs and blank DVDs O 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

Question 18 O/ 1 point A time series plot is essentially a: ‘) histogram ”) diagram % {") figure = () Scatte rplot Question 19 1 / 1 point The following data show the height (in inches) of sample of students. 67 70 71 61 71 67 69 68 66 65 67 6764 71 6967 67 64 62 69 Create a stem leaf plot for these data and then select all of the correct statements about these data based on your plot. v ) 20% of students are over 69 inches tall. O There are 25 students in the sample. O The maximum observed height is 70 inches. _ ) 50% of students heights are less than 65 inches. W Hide question 19 feedback 70, 71,71 and 71 are over 69 inches tall. 4/20= 20% of students are over 69 inches tall. Stem Leaf 6 1244567777778999 7 0111 Question 20 1 /1 point The following data show the height (in inches) of sample of students. 67 70 71 61 71 67 69 68 66 65 67 67 64 71 69 67 67 64 62 69 Create a stem leaf plot for these data and then select all

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

of the correct statements about these data based on your plot. v | 50% of students have height less than 65 inches v | The maximum height observed is 67 inches v/ | More students have height of 65 inches or more v | The maximum observed height is 71 inches v/ | None of these are correct W Hide question 20 feedback More students have height of 65 inches or more The maximum observed height is 71 inches. Only 4 heights are less than 65 inches. Stem Leaf 6 1244567777778999 7 0111 More students have height of 65 inches or more The maximum observed height is 71 inches. Only 4 heights are less than 65 inches. Stem Leaf 6 1244567777778999 7 0111 More students have height of 65 inches or more The maximum observed height is 71 inches. Only 4 heights are less than 65 inches. Stem Leaf 6 1244567777778999 7 0111 Done

WK 2 Test

Related Documents