Which of the following sets of data would best be shown as a bar graph? Why?
A. the average temperature for every day in May
B. the number of students who play different instruments in a band
C. the height of a child from age 6 to age 10
D. the changing price of admission to an amusement park over four years
(a) The average temperature for each day in May is best represented by a line graph (or time graph)
(b) The best graph for the number of students who play different instruments in the band is a bar graph -- the axesused to denote the type of instrument is not quantitative,and we would like a visual comparison of the numbers.
(c) To represent the height of a child from ages 6 to 10 I would use a line graph (or time graph)
(d) To represent the changing cost of admission I would use a line graph (or time graph)
** A time graph has units of time as the independent variable (usually the horizontal axis) and some measure as the dependent variable. Choices a,c, and d all fall into this category.