click below
click below
Normal Size Small Size show me how
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 |