Ch 8 Vocabulary

4. (MAD) find the mean of all the differences.
8. a measure of center; the middle data value when put in numerical order.
10. a measure of center; the value that occurs most often.
11. a measure of variability.
12. describes how the values in a data set vary with a single number.
13. a data value that is very different from the other values.
14. anticipates that their will be a variety of answers.
15. a graph that uses bars to show the number of values in each category or interval.

1. deviation the absolute value of the difference between a value and the mean.
2. values that divide a data set into four equal parts.
3. Mean, Median, and Mode
5. (IQR) a measure of variability; represents the difference between the third quartile and the first quartile.
6. shows the number of times a value occurs in each category or interval.
7. plot a diagram that shows the distribution of data values using the median, quartiles, minimum value, and maximum value on a number line.
8. average; is the sum of all the values in a data set divided by the total number of data values in the set.
9. distribution how the data values are arranged.