STAT200 Week 2 Homework For problems 1 and 4 use a, b, c, d values next to your name in the table

STAT200 Week 2 Homework For problems 1 and 4 use a, b, c, d values next to your name in the table

For problems 1 and 4 use a, b, c, d values next to your name in the table:
Student a b c d
Harris 9 11 10 12
Jacobs 10 12 15 8
Johnson 11 9 14 6
Kurata 13 7 9 15
Mendoza 14 6 8 10
Monyei 15 5 8 12
Munshi 4 12 10 15
Pickering 8 11 14 20
Rager 20 10 12 8
Ritchey 12 8 20 10
Rosen 20 10 25 15
Sekamwa 8 6 10 14
Turner 10 18 12 20

Student a b c d
Acopan 11 10 4 2
Ambol 10 14 8 4
Anderson 6 12 20 10
Attai 8 10 14 20
Broseker 4 6 8 10
Buchheit 12 8 4 2
Bullock 15 20 25 30
Caywood 10 20 30 40
Cox-Martinez 14 10 8 10
Eickhoff 5 10 15 20
Fox 6 12 8 10
Gray 7 11 9 6
Hampton 8 10 12 14
Problem 1. Table below shows data collected about eye color of students in one class.
(for a, b, c, d, use numbers from the table above)

Eye Color Number of students
Brown a
Blue b
Green c
Gray d

Complete the column for relative frequency

Eye Color Number of students Relative Frequency
Brown a
Blue b
Green c
Gray d

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Problem 2. Recorded set of data has maximum value 21. However, when the data was entered into the computer, this value was entered as 41. Which characteristic of central tendency will be affected by this mistake: mean, median or both?

Answer: Mean
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Problem 3. If you know the minimum, the maximum, and variance of a distribution.
Which of the following characteristics can you determine (select one):
mean, median, interquartile range, standard deviation?

Problem 4. Find Mean and Median for the following data collection:
(for a, b, c, d, use numbers from the table in the beginning of the homework)
a, b+1, c+2, d+3, a+4, b+5
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Problem 5. Suppose research was conducted: how many t-shirts people have.
80 people were asked. Results of this poll are shown below:

What is percentage of people who own three or more t-shirts?