Statictis Assignment

For problems 1 and 4 use a, b, c, d values next to your name in the table:

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

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

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

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?

Number of T-shirts

1 2 3 4 5 6 5 10 22 20 15 8