Data Analysis

Question 1

what is a pro and con of pie charts?

Answer 1

+ gives a visual representation of the relative sizes or shares of a whole part
- not effective for showing changes in proportions over time as trends arent shown

Question 2

what is a pro and con of bar charts?

Answer 2

+ data is presented in a clear format with key values highlighted
- oversimplifies data

Question 3

whats a pro and con of histograms?

Answer 3

+ shows the shape of the distribution for a large set of data
- cant be used for exact values as the data is grouped into intervals

Question 4

whats the equation for an index number?

Answer 4

(value in period / value in base period) * 100

Question 5

whats a pro of index numbers?

Answer 5

+ can compare changes over time