Question

graphing skill #1: what type of graph is it?
there are several types of graphs that scientists often use to display data. they include:
pie graphs bar graphs histograms line graphs scatter plots
based on these definitions and the descriptions of the experiments below, please put an “x” in the box for the type of graph that would be most appropriate (some descriptions may have several graph types that would be appropriate, you only need to select one).

description pie bar histo. line scatter

ex a graph showing the number of 5th - graders who prefer coke or pepsi x
a graph showing how a newborn baby’s weight changes over time
a graph showing the percentage of the class earning as, bs, and cs.
a graph showing the distribution of trees of different size groups (e.g. 0 - 10cm, 10 - 20cm, etc.) in a forest
a graph showing the relationship between height and arm - length
a graph showing the percentage of an allowance spent on different categories (e.g. food, movies, etc)
a graph showing the amount of rainfall, by month, over a 12 - month period
a graph showing the number of ice - cream cones purchased as a function of the day’s temperature
a graph showing the number of push - ups done each day during a 2 - week training program

Explanation:

1. For showing how a newborn baby's weight changes over time, a line graph is best as it shows trends over a continuous variable (time).
2. To display the percentage of the class earning As, Bs, and Cs, a pie - chart is appropriate as it shows parts of a whole.
3. For the distribution of trees of different size groups in a forest, a histogram is suitable as it represents the frequency distribution of a continuous variable (tree sizes).
4. To show the relationship between height and arm length, a scatter - plot is ideal as it shows the correlation between two variables.
5. For the percentage of an allowance spent on different categories, a pie - chart is good for showing parts of a whole.
6. To display the amount of rainfall by month over a 12 - month period, a line graph is best for showing trends over time.
7. For the number of ice - cream cones purchased as a function of the day's temperature, a scatter - plot is appropriate to show the relationship between two variables.
8. For the number of push - ups done each day during a 2 - week training program, a line graph is suitable for showing the trend over time.

Answer:

1. Line
2. Pie
3. Histo.
4. Scatter
5. Pie
6. Line
7. Scatter
8. Line