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Math Vocab#2
Math Chapter 3
| Question | Answer |
|---|---|
| Mean | the data set is the sum of the values divided by the number of values |
| Median | the data set is the middle value when the values, the median is the mean of the two middle values |
| Mode | the data set is the value tha occurs the most often. A data can have no mode, onemode, or more than one mode |
| Population | the entire group of people or objects that you want information about |
| Sample | a part of a population |
| Random Sample | a sample selectedin such a way thateach member of the population has an equally likely chance to e part of the sample |
| Biased sample | a sample that is not representive of the population from what it is selected |
| Bar graph | a type of graph in which the lenght of the bars are used to represent and compare data |
| Line graph | a type of graph in which points representing data pairs are connected by line segments |
| Stem-and-leaf plot | a datadisplays that helps you see how data values are distributed |
| Box-and-whisker plot | a data that displys that divides data values into five parts |
| Lower quartile | the median of the lower half |
| Upper quartile | the median of the upper half |
| Lower extreme | the least value |
| Upper extreme | the greatest value |
| Frequency table | a table used to group data values into intervals |
| Frequency | the number of data values that lie in an interval of a frequency table or a histogram |
| Histogram | a graph that displays data from a frequency table |
| Range | the difference between the greastest and the lowest in the data set |