Question

a. An emergency room documents the reason for the emergency room visit (broken bone, needs stiches, etc.) What type of variable was data collected for? quantitative-discrete qualitative quantitative continuous Which graph would be appropriate for this type of data? side-by-side bar chart histogram scatterplot bar chart b. A women's clinic looks at files and records whether or not the patient has gotten a mammogram in the last year and ethnicity What type of variable(s) was data collected for? quantitative-continuous qualitative quantitative-discrete Which graph would be appropriate for this type of data? histogram scatterplot side-by-side bar chart bar chart c. A women's clinic looks at files and records the number of times the patient has been seen in the last 5 years and number of mammograms that patient has had in the last 5 years What type of variable(s) was data collected for? quantitative-continuous quantitative-discrete qualitative

Answer 1

a) qualitative (reason for emergency room visit is categorical)

bar graph (frequency of occurrance of each reason can be plotted on bar chart)

b) qualitative (ethnicity is categorical and the responce of patient taking mammogram: yes/no is also qualitative)

side by side bar graph (different ethnicity can be plotted on X-axis and each bar can be split into bar segments considering yes/no. hence 2 categorical variable are plotted)

c) Quantitative-discrete (Number of visit and number of mamograms taken are both discrete as they take only individual values)

Scatter plot (each observation ie point will have 2 co-ordinates. Number of visits on X axis and Number of mamograms taken on Y-axis. The point representing that observation is placed at the intersection of the two coordinates.)

d) Quantitative continuous (Weight can take continuous values)

Histogram (Different ranges of weights can be plotted)