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Which of the following variables for data about a track team is a discrete variable?

C??
The height of a team member
A

The weight of a team member
B

The number of times that a team member finished first in a race
C

The time recorded for the last race that was run by a team member
D

The time recorded for a one-mile race by a team member
E

A group of middle school students were asked which school subject was their favorite. The results are displayed by grade of student in the following bar chart.

The figure presents a bar graph. The horizontal axis is labeled Number of Students, and the numbers 0 through 60, in increments of 10, are indicated. The vertical axis is labeled School Subject, and five subjects are indicated: Art, Social Studies, Science, Math, and Language Arts. There are two bars of data per subject, indicating the seventh and eighth grades. The data represented by the bars are as follows. Note all values are approximate. Language Arts. seventh grade, 25 students, eighth grade, 37 students. Math. seventh grade, 32 students, eighth grade, 23 students. Science. seventh grade, 54 students, eighth grade, 42 students. Social Studies. seventh grade, 15 students, eighth grade, 28 students. Art. seventh grade, 7 students, eighth grade, 18 students.
Which of the following statements is supported by the bar chart?
A??

For students who chose art, the number of grade 8 students was at least 100% greater than the number of grade 7 students.
A

For students who chose social studies, the number of grade 8 students was at least 100% greater than the number of grade 7 students.
B

For students who chose science, the number of grade 8 students was at least 50% less than the number of grade 7 students.
C

For students who chose math, the number of grade 8 students was at least 50% less than the number of grade 7 students.
D

For students who chose language arts, the number of grade 8 students was at least 100% greater than the number of grade 7 students. E

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3 answers

  1. You are correct about A being the answer to the second quesion.

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  2. I was thinking it would be C. because it is the number of times because a discrete variable is like the performance rated 1,2,3,4,5.

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  3. Did you figure out the first question? If so, please explain the answer

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