A nutritionist was interested in determining the smoking status of her clients. She asked each of her clients to report his or her current smoking status: Smoker, Ex-Smoker, and Non-Smoker. Which of the following graphical techniques is the best way for her to represent the data?
a. pie chart
b. scatterplot
c. histogram
d. stemplot
The best way for the nutritionist to represent the smoking status data of her clients would be through a pie chart.
A pie chart is a circular graphical representation that is divided into sectors, where each sector represents a category or group. In this case, the categories are Smoker, Ex-Smoker, and Non-Smoker. The size of each sector in the pie chart corresponds to the proportion or percentage of clients in each smoking status category.
To create a pie chart, the nutritionist would follow these steps:
1. Collect the data: The nutritionist needs to ask each client to report their current smoking status and record the information for each client.
2. Tabulate the data: After collecting the data, the nutritionist needs to tabulate the number of clients in each smoking status category (Smoker, Ex-Smoker, and Non-Smoker).
3. Calculate the proportions: The nutritionist needs to calculate the proportion or percentage of clients in each smoking status category. This can be done by dividing the number of clients in each category by the total number of clients.
4. Create the pie chart: Using appropriate software or tools, the nutritionist can create a pie chart. Each sector of the pie chart will represent a smoking status category, and its size will correspond to the proportion or percentage of clients in that category.
By using a pie chart, the nutritionist will be able to visually represent the distribution of smoking status among her clients in a clear and easily understandable manner.