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# A nutritionist collects the weight of college students in the first semester, then again in the second semester. What is the best way to visually present this data? a) Line Graphs b) Scatterplots c) Bar Graphs d) Pie Charts # A nutritionist collects the weight of college students in the first semester, then again in the second semester. What is the best way to visually present this data? a) Line Graphs b) Scatterplots c) Bar Graphs d) Pie Charts

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Scatterplots asked 2021-03-08
A nutritionist collects the weight of college students in the first semester, then again in the second semester. What is the best way to visually present this data?
a) Line Graphs
b) Scatterplots
c) Bar Graphs
d) Pie Charts

## Answers (1) 2021-03-09
Line graphs:
Graphs are used to represent statistical data. A line graph is a diagram showing the relationship between the points, drawn by joining several points. It visulaizes how two variables are related to each other and how they vary with repect to one another. It can be represented in an xy plane, where independent variables are represented on x-axis and dependent variables in y-axis.
Scatter plots:
It is used to represent the values of two variables obtained from a set of data. It visualizes how one variable is affected by another. The values of the two variables are plotted along x- axis and y-axis and the points plotted represent the correlation existing between the two variables.
Bar graph:
Bar graph is used to compare a set of data by drawing rectangles corresponding to the data being compared. The graphs are represented using vertical bars.
Pie charts:
A pie chart is a circular graph that is divided in to segments where each segment represents a percentage of the whole segment. Thus, it can be identified how much percentage each segment constitutes to the whole.
Here, the weight of the students in first semester and in second semester is measured. Since two sets of data is being compared and hence the best way to visually present the data is by using a Bar Graph.
Answer:
The best way to visually present the data is by using a Bar Graph.

### Relevant Questions asked 2021-05-05

A random sample of $$n_1 = 14$$ winter days in Denver gave a sample mean pollution index $$x_1 = 43$$.
Previous studies show that $$\sigma_1 = 19$$.
For Englewood (a suburb of Denver), a random sample of $$n_2 = 12$$ winter days gave a sample mean pollution index of $$x_2 = 37$$.
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