### Chapter 9 Vocabulary Project

Brandon Nguyen

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Across
2.the description of the relationship between two data sets
4.a graph with points plotted to show a possinle relationship between two sets of data
8.a sample of a population that is made up of members that choose to be in the sample
11.a diagram that is used to show relationships between sets
12.a part of the population
13.a graph that shows how two related sets of data change over time
15.a table that lists items together according to the number of times, or frequency, that the item occurs
16.a graph to organize and display data so that the frequencies can be compared
18.a sample that does not fairly represent the population
19.the spread of values in a set of data
20.a number line with marks or dots that show frequency
21.three values, one of which is the median, that divide a data set into fouths. See also first quartile, third quartile
23.a value much greater or much less that the others in a data set
24.a sample of a population that has been divided into subgroups
25.a bar graph that shows the frequency of data within equal intervals
Down
1.a sample in which each individual or object in the entire population has an equal chance of being selected
3.a sample of a population that has been selected using a pattern
5.a graph that displays the highest and lowest quarters of data as whiskers, the middle two quarters of the data as a box, and the median
6.sampling the most available subjects in the population to obtain quick results
7.the sum of a set of data divided by the number of items in the data set; also called average
9.the difference between the greatest and least values in a data set
10.the middle number or the mean (average) of the two middle numbers in an oredered set of data
14.a bar graph that compares two related sets of data
17.the entire group of objects or individuals considered for a survey
22.the bumber or numbers that occur most frequently in a set of data; when all bumbers occur with the same frequency, we say there is no mode

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