Notes on lesson on Statistics |




Table, Pie chart and Graph

A table is a set of data elements or values using a model of vertical columns and horizontal rows, Pie chart is a special chart that uses "pie slices" to show relative sizes of data and a graphical representation of data also called a graph.


The mean is the average of the numbers: a calculated "central" value of a set of numbers. To calculate: Just add up all the numbers, then divide by how many numbers there are.


The median is the middle score for a set of data that has been arranged in order of magnitude.


One of the three points that divide a range of data or population into four equal parts.The first quartile also called the lower quartile. The second quartile (the median) divides the range in the middle. The third quartile also called the upper quartile.

Mode and Range

Mode is the statistical term that refers to the most frequently occurring number found in a set of numbers and the "range" is just the difference between the largest and smallest values.