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Week 2

Hello,

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. 

Question 1 (c)

Calculate mean, mode, median, Quartile 1 and 3, Interquartile range, Box Whisker plot.

Question 1 (d)

Calculate the sample mean and variance.

Question 1 (e)

Use Excel data analysis toolpack to replicate the descriptive statistics.

Question 1 (f)

Based on the following portfolio data draw a pie chart: 

type

amount in 1000’s $

stocks

46.5

bonds

32

cd

15.5

savings

16

Question 1 (g)

Illustrate the following data with the most appropriate chart.

   
 

A

B

C

stocks

46.5

55

27.5

bonds

32

44

19

cd

15.5

20

13.5

saving

16

28

7

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