# Basic Statistics & Probability

### Quizzes

# Basic Statistics & Probability: Graph It to Me Quiz

Think you’ve got your head wrapped around

*? Put your knowledge to the test. Good luck — the Stickman is counting on you!***Basic Statistics & Probability**
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Q. Two dice were rolled 50 times, and their sums were recorded in this bar graph.

Find the mode of the data.

6

6.5

6.82

7

There is no mode.

Q. Two dice were rolled 50 times, and their sums were recorded in this bar graph.

Find the median of the data.

6

6.5

6.82

7

There is no median.

Q. Two dice were rolled 50 times, and their sums were recorded in this bar graph.

How does the theoretical probability of rolling a sum of 12 compare to the experimental probability?

The experimental probability is higher.

The theoretical probability is higher.

Both probabilities are the same.

Neither probability can be compared to the other.

I was sleeping during this lesson.

Q. This stem-and-leaf plot shows the scores from the last English test.

If a test is chosen at random, what is the probability that the score will be divisible by 4 AND greater than 80?

≈ 27%

≈ 55%

≈ 64%

≈ 77%

≈ 80%

Q. This stem-and-leaf plot shows the scores from the last English test.

If a test is chosen at random, what is the probability that the score will be divisible by 4 OR greater than 80?

≈ 27%

≈ 55%

≈ 64%

≈ 77%

≈ 80%

Q. This stem-and-leaf plot shows the scores from the last English test.

Find the mean, median, and mode of the stem-and-leaf plot. Round each answer to the nearest whole number.

Mean = 82, median = 80, and mode = 81

Mean = 80, median = 81, and mode = 82

Mean = 81, median = 82, and mode = 80

Mean = 82, median = 81, and mode = 80

Mean = 83, median = 82, and mode = 81

Q. 35 students took a test. This box-and-whisker plot shows the results.

What percentage of the students scored greater than 65 on the test?

≈ 3%

25%

50%

75%

≈ 97%

Q. 35 students took a test. This box-and-whisker plot shows the results.

If a score is chosen at random, what is the probability that it lies inside the box?

0%

25%

50%

75%

100%

Q. 35 students took a test. This box-and-whisker plot shows the results.

Based on this data, would a score of 48 be considered an outlier?

Yes

No

Maybe

What's an outlier?

I refuse to answer that question on the grounds that I don't know the answer.

Q. Elana is growing a plant on her windowsill. Every week she records its height in inches. This scatter plot displays her findings, and a line of best fit is drawn. Based on this plot, how high can she expect the plant to be at 15 weeks?

8.5 in

9 in

9.5 in

10 in

10.5 in