STD X – STATISTICS – EINSTEIN

GRAPHICAL REPRESENTATION

Recall, Statistics is a special subject that deals with large (usually) numerical data. The statistical data can be represented graphically. Graphical representation of data helps in faster and easier interpretation of data. Let’s learn some of the commonly used charts for analyzing data in this topic.

Frequency polygon

Frequency polygon by not using a histogram

Ogives

MEASURES OF CENTRAL TENDENCIES

Measures of central tendency are a key way to discuss and communicate with graphs. The term central tendency refers to the middle, or typical, value of a set of data, which is most commonly measured by using the three m’s: mean, median, and mode. The mean, median, and mode are known as the measures of central tendency. We shall learn about mean in this topic.

Mean (or average)

Mean of grouped data

Median

Median of grouped data

Mode

Mode of grouped data