HCD 300 - Homework 3a

Given the following data for resting heart rate among college students, what is the IQR? (Calculate by hand) 56, 57, 60, 61, 62, 64, 64, 68, 70, 70, 72, 72, 73, 74, 78, 80, 87, 89, 90

- 16

Choose the best set of answers to complete the following statement. According to the attached boxplot, 50% of the study sample consume between _______ and _______ fruit servings per week.

- 20, 50

Fill in the blank with the correct answer. According to the attached boxplot, _______ specimens were bronchoalveolar lavage samples.

- 6

If you have a set of scores with a range of 60 and you want 10 intervals, what should be the size of your class interval?

- 6

If you wanted to visualize the change in the mean test score for the same exam over multiple semesters which visualizations might be used (choose one or more)?

- Bar chart - Line chart

Which of the following would be appropriate to display nominal data? (choose one or more)

- Bar graph - Pie chart

What term describes the groups that you divide your data into when creating a histogram? (choose one or more)

- Class Interval - Bin

True or False, box plots are not affected by outliers.

- False

Which of the following tells you how often a certain score occurs?

- Frequency Distribution

What is the most basic method of illustrating data?

- Frequency distribution

Which of the following visual representations uses bars to display the frequencies?

- Histogram

Which of the following is designed to present large amounts of information quickly, and uses pictures or shapes to display the information?

- Infographic

If you were interested in tracking your GPA during the time you are in graduate school, which of the following might you use?

- Line Chart

Which of the following are among the things to remember when creating figures?

- Maintain the scale in the graph

Which of the following is not one of the 5 number summary?

- Mean

A researcher asked the following question on a survey: What is your age? 1.) under 18 2.) 18-25 3.) 26-40 4.) 41-60 5.) over 60 What scale of measure is being used for this variable?

- Ordinal

A researcher asks the following question on a survey: How old are you? ___________ (respondents enter age as a whole number) What scale of measure is being used for this variable?

- Ratio

Which of the following would be appropriate to use when displaying continuous interval/ratio data? (choose one or more)

- Scatterplot - Histogram - Box and Whisker plot

A scatterplot is the best visualization for showing which of the following (choose one or more)?

- The relationship between the two interval/ratio variables - indirect or negative relationship between two ratio variables - correlation

A good rule of thumb when creating an illustration is ______.

- To make sure your graph communicates only one idea