Math connections statistics unit test with answers

Answer 1

1. A scatterplot is used to show the relationship between two sets of data.

True

2. The mean is the average of all the data values in a set.

True

3. In a normal distribution, the mean, median, and mode are all equal.

True

4. The range is the difference between the largest and smallest values in a data set.

True

5. The interquartile range is a measure of spread that is less affected by outliers than the range.

True

6. The standard deviation is a measure of how spread out the values in a data set are around the mean.

True

7. A z-score indicates how many standard deviations a data value is from the mean.

True

8. The correlation coefficient ranges from -1 to 1, with 0 indicating no correlation.

True

9. A random sample is one in which every member of the population has an equal chance of being selected.

True

10. The central limit theorem states that the sampling distribution of the sample mean approaches a normal distribution as the sample size increases.

True

Answers:
1. True
2. True
3. True
4. True
5. True
6. True
7. True
8. True
9. True
10. True