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stat200_hw_2_2.docx

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Homework Assignment 2

Stat 200 ()

Instructions: Be sure to record the final answer next to “Answer” and show all your calculation steps or assumptions under “Work.” You can type in your calculations, use the equation tool, or insert images of your handwritten calculations.

The case studies are all at the end of the book. To find them, use ctrl+f and search for "case studies", but you could also just read the full table of contents for the book. For example, here is the link to the ADHD case study:  http://onlinestatbook.com/2/case_studies/adhd.html

Remember to add your last and first name to the end of the file name and upload your answers here (e.g., FILENAME_LASTNAME.docx) before submitting.

*Page numbers are approximate

Problem Number

Problem and Solution

#1

(2 pts)

Lane et al., Chapter. 2, Exercise 7, Page 118

For exercise 7 use the table below to answer a-d.

Consult these websites for how to make these figures in Excel (or OpenOffice).

Make a pie chart in Excel

https://support.office.com/en-us/article/Present-your-data-in--a-pie-chart-1a5f08ae-ba40-46f2-9ed0-ff84873b7863?ui=en-US&rs=en-US&ad=US

Make a horizontal bar chart in Excel

https://support.office.com/en-US/Article/Present-your-data-in-a-bar-chart-6050133e-398e-451b-9fd9-a881cb03cb89?ui=en-US

Make a vertical bar chart in Excel

http://fiveminutelessons.com/learn-microsoft-excel/how-create-bar-or-column-chart-excel

Answer:

Work:

#2

(2 pts)

Lane et al., Chapter. 2, Exercise 9, Page 119

Answer:

Work:

#3

(2 pts)

Lane et al., Chapter. 3, Exercise 6, Page 160

6. You recorded the time in seconds it took for 8 participants to solve a puzzle.

These times appear below. However, when the data was entered into the statistical program, the score that was supposed to be 22.1 was entered as 21.2.

You had calculated the following measures of central tendency: the mean, the median, and the mean trimmed 25%. Which of these measures of central tendency will change when you correct the recording error?

Answer:

Work:

#4

(2 pts)

Lane et al., Chapter. 3, Exercise 8, Page 161

Answer:

Work:

#5

(2 pts)

Lane et al., Chapter. 3, Exercise 30, Page 164

Question from the ADHD Treatment (AT) study. To find the information on this study, please go to the “Case Studies” section (see instructions on first page).

Answer:

Work:

#6

(2 pts)

Lane et al., Chapter. 3, Exercise 31, Page 164

Question from the ADHD Treatment (AT) study. To find the information on this study, please go to the “Case Studies” section (see instructions on first page).

Answer:

Work:

#7

(2 pts)

Illowski et al., Chapter. 2, Exercise 78, Page 137

Answer:

A

B.

# of movies

Frequency

Relative Frequency

Cumulative Relative Frequency

0

5

1

9

2

6

3

4

4

1

Work:

#8

(2 pts)

Illowski et al., Chapter. 2, Exercise 80, Page 138

Answer:

Work:

#9

(2 pts)

Illowski et al., Chapter. 2, Exercise 84 Page 139

Answer:

Work:

#10

(2 pts)

Illowski et al., Chapter. 2, Exercise 88, Page 141

Answer:

Work: