In this week you will learn about the mean, median, mode, Q1, Q2, variance and some important charting techniques using excel such as histograms and polygons.

The Essentials

An introduction to measures of central tendency

An introduction to measures of dispersion and the standard deviation

Question 1 (a)

Calculate sum based on sigma notation.

Question 1 (b)

Construct a stem and leaf plot.

Construct a Histogram (with 5 intervals).

Construct a percentage polygon and cumulative percentage polygon.