A college professor monitored his course website For each day of September, he found and recorde Course website during that day. He organized the distribution table: Variable Mid Point 0-5 5+0/2=2.5 Frequency 8

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७ न
4.
Problem 1
A college professor monitored his course website activity over the month of September.
For each day of September, he found and recorded the number of students who used the
course website during that day. He organized the data in the following grouped frequency
distribution table:
Variable
Mid Point
12+
10+
8
6
0-5
6-11
12-17
18-23
24-29
●
5+0/2=2.5
8
6+11/2=8.5
12
12+17/2=14.5 4
a. For this scenario, identify the following:
Variable Days of September
●
Individual
Frequency
18+23/2=20.5 4
ey+29/2=26.5 2
8
0-5
→
n = 30
Xxi * fi
6-11
2.58=20
8.5*12= 102
b. Use the table above for calculations to estimate the population mean.
Estimate population meau = Σ Cxi*fi) / N = 315/30
= 10.5//
Interpret the meaning of the population mean in the context of this problem.
14.5*21-58
20.5*4=82
26.5*2= 53
ECxi fi)=315
Students that use website during the day
Students that use website in september
Which variable, mean or median, is the better representation of the center for this data
set? Why? (You do not have to calculate the median to answer this question)
M2
Problem 2
Make a relative frequency histogram of the data in problem 1. Label your axes.
bl...
4
12-17
Population
Population size →→ Total number of students that used website in Septemb
Number of days when at least 12 students used the website
(30
18-23
ressor.
2
24-29
1
Transcribed Image Text:७ न 4. Problem 1 A college professor monitored his course website activity over the month of September. For each day of September, he found and recorded the number of students who used the course website during that day. He organized the data in the following grouped frequency distribution table: Variable Mid Point 12+ 10+ 8 6 0-5 6-11 12-17 18-23 24-29 ● 5+0/2=2.5 8 6+11/2=8.5 12 12+17/2=14.5 4 a. For this scenario, identify the following: Variable Days of September ● Individual Frequency 18+23/2=20.5 4 ey+29/2=26.5 2 8 0-5 → n = 30 Xxi * fi 6-11 2.58=20 8.5*12= 102 b. Use the table above for calculations to estimate the population mean. Estimate population meau = Σ Cxi*fi) / N = 315/30 = 10.5// Interpret the meaning of the population mean in the context of this problem. 14.5*21-58 20.5*4=82 26.5*2= 53 ECxi fi)=315 Students that use website during the day Students that use website in september Which variable, mean or median, is the better representation of the center for this data set? Why? (You do not have to calculate the median to answer this question) M2 Problem 2 Make a relative frequency histogram of the data in problem 1. Label your axes. bl... 4 12-17 Population Population size →→ Total number of students that used website in Septemb Number of days when at least 12 students used the website (30 18-23 ressor. 2 24-29 1
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