If you have already watched the chapter 14 videos (Statistics) then you are good to attempt the following quiz. Good luck!!!

Very often we need to analyse a given data to find a value that can represent the entire data set. In other words we say the central tendency of the data set. Different types of data would require different methods to find this central value which can be used as the representation of the entire data set. For example, average number of students can be find using the mean of the data, splitting apples in large sized and small sized groups would require median and for a shoe company mode will be the best measure to decide about the investment.

So, following are three measures of central tendency that you must understand by watching the video embedded below. 

• Mean
• Median
• Mode

In this tutorial you will learn how to draw few very important and basic graphs in statistics. It is bit lengthy video that covers different scenarios like uniform classes, varying width classes, continuous classes etc. It is a must watch video for every beginner to intermediate level of student of statistics. This video covers the following graphs:

• Bar graph
• Histogram
  • Uniform width
  • Varying width
• Frequency polygon 

This tutorial is recommended for the beginners to watch to understand the following:

• What is statistics
• Data
• Information
• Frequency distribution table
  • Ungrouped
  • Grouped
• Class Intervals 
  • Overlapping
  • Non-overlapping
• Class limits 
  • Upper class limit
  • Lower class limit