Statistics unit test answers

Answer 1

1. The mean of a data set is calculated by adding up all the values in the set and dividing by the number of values.

2. The median of a data set is the middle value when the values are arranged in numerical order.

3. The mode of a data set is the value that appears most frequently.

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

5. Outliers are data points that are significantly different from the rest of the data set.

6. A histogram is a visual representation of the frequency distribution of a data set.

7. The standard deviation is a measure of the dispersion or spread of a data set.

8. A correlation coefficient is a value that indicates the strength and direction of a relationship between two variables.

9. A scatter plot is a graph that shows the relationship between two variables by depicting each data point as a dot.

10. Sampling bias occurs when the sample used in a study is not representative of the population being studied.