10 terms

10 word set of stats vocabulary appropriate for grade 6 to 8

sample

* section of a whole group;

* to get data from a part of a group and use it to give information about the whole group

* to get data from a part of a group and use it to give information about the whole group

statistics

the collection, organization, presentation, interpretation and analysis of data

box-and-whiskers plot

* a diagram or graph using a number line to show the distribution of a set of data;

* displays the median, the upper and lower quartiles and the maximum and minimum values of the data

* displays the median, the upper and lower quartiles and the maximum and minimum values of the data

stem-and-leaf plot

a data display that shows groups of data arranged by place value

mean

*average of a number of different amounts;

*1.) Add up all the amounts; 2.) Divide your total by how many amounts there were.

*1.) Add up all the amounts; 2.) Divide your total by how many amounts there were.

median

*the middle value of an ordered set of numbers;

*1.) place numbers in numerical order; 2.) cross off numbers from the outside until you reach the middle value; 3.) if there are two numbers in the middle, add them and divide by 2.

*1.) place numbers in numerical order; 2.) cross off numbers from the outside until you reach the middle value; 3.) if there are two numbers in the middle, add them and divide by 2.

mode

in a set of scores, this is the value that occurs the most often

range

the difference (subtract) from the highest and lowest values in a set of data; high value - low value = this ?

outlier

a value far away from the rest of the data

scatter plot

a graphical diagram with points plotted to show the relationship between two variables