Question

18.
What is the mode of: 3.7, 5, 9.2, 4, 6.1, 5, 2.6, 4, 5.2, 5?

4.5

5

6.6

4.88
19.
What does the Standard Deviation tell you?

It tells how spread out the data is.

It tells the average value of all the data.

It tells you if the data is normally distributed.

It tells you how many data points are above the mean.
20.
The probability of an outcome that lies within 95% of the mean is a good indicator that it lies in which standard deviation?

There is a probability that the outcome is within 3 standard deviations of the mean.

There is a probability that the outcome is within 2 standard deviations of the mean.

There is a probability that the outcome is within 1 standard deviation of the mean.

Standard deviations are not reliable, so the probability cannot be determined.
21.
Calculate the mean of: 4.6, 3, 8.1, 9, 12, 3, 9, 3.5, 7, 3.

5.8

6.22

9

3
22.
What is the median of a set of data?

What the average of the data is.

The largest value of the data.

The difference in the largest value from the smallest value.

The middle number.

Answer 1

18. 5
- Mode = value occurring most often (5 appears 3 times).

19. It tells how spread out the data is.

20. There is a probability that the outcome is within 2 standard deviations of the mean.

21. 6.22
- Sum = 62.2, mean = 62.2 / 10 = 6.22.

22. The middle number (the median).