Graphs and statistics

Question 1

What does every percentage point represent in a pie chart?

Answer 1

3.6 degrees (because complete graph is 360 degrees)

Question 2

How to convert % into degrees on a pie chart?

Answer 2

Multiple by 3.6. E.g. if given data of 20%, multiple by 3.6 to get 72 degrees

Question 3

How to convert degrees to % on a pie chart?

Answer 3

Divide by 3.6

Question 4

In what order do you draw segments on a pie chart?

Answer 4

Largest to smallest clockwise from 12 o’clock

Question 5

On a bar graph, what is usually plotted on the vertical axis?

Answer 5

Non-quantifiable data (can’t be measured) e.g. year, country, age group

Question 6

What are composite bar/column graphs?

Answer 6

Each bar/column is subdivided into different parts/sections

Question 7

On a line graph, the variable that causes change (often time) is plotted on which axis?

Answer 7

Horizontal

Question 8

Do wind rose branches show the direction wind is coming from or heading towards?

Answer 8

Coming from

Question 9

What is a positive correlation on a scatter graph?

Answer 9

As one increases, so does other

Question 10

What is a negative correlation on a scatter graph?

Answer 10

As one increases, the other decreases

Question 11

Ternary graphs show 3 different variables that add up to what value on any given location?

Answer 11

100%

Question 12

Which side of the ternary graph do you always start reading from?

Answer 12

The right

Question 13

Each population pyramid represents what % of particular population?

Answer 13

100%

Question 14

What age are dependent parts of the population?

Answer 14

14 and under, 65 and over

Question 15

If base of pyramid is wide what does that represent?

Answer 15

A young population (often developing)

Question 16

What type of distribution of age cohorts do developed countries tend to have?

Answer 16

More even than developing

Question 17

What are 2 factors that could explain why there are more people than expected in an age group?

Answer 17

Baby boom, immigration

Question 18

What are3 factors that could explain why there are less people than expected in an age group?

Answer 18

War, famine, disease

Question 19

What are 4 possible reasons for gender imbalance?

Answer 19

More male deaths in war, baby girls killed, females longer life expectancy, migration of certain gender

Question 20

If given percentage of age group and the total population, how would you find the total number of people in that age group?

Answer 20

Multiply percentage (e.g. 2%) by the total population
e.g. 0.02 x 18 173 600=363 472