WK 2 Test

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Jun 12, 2024

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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%

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

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