I need help with my Maths Statistics homework! PIE GRAPH INVOLVED?

Question

I have all these data that i need to put into a pie graph. One problem is, my data doesnt add up to 100%. I am comparing the life expectancy of two countries and that is the Middle East and Africa, the data i am provided is somehing like: 71,48.03,73 and all that. How do i put these into a pie graph?

People, i'm thanking u soooo much for the answers...

Answer 1

A simple rule for knowing when to use a pie chart is to only use one for data that add up to 100%. So, since you can't add up to 100%, you should just use a bar graph with 3 separate columns.

Answer 2

If you don't have Excel, you'll have to figure out the percentage of the total for each of your data points.

For the numbers you've given in this example, add them up:
71 + 48.03 + 73 = 192.03

Now figure out what percent each is of the total:
71 / 192.03 = 37%,
48.03 / 192.03 = 25%, and
73 / 192.03 = 38%.

Finally, determine how many degrees each would take up of the full circle of your pie chart:
37% of 360° = 133°,
25% of 360° = 90°, and
38% of 360° = 137°.

Measure each angle from the center and you've got yourself a pie chart. (I rounded each to the nearest percent and the nearest degree, as it's unlikely one would need to measure with more precision than degrees to make a chart like this.)

If you don't mind me interjecting here, though, your teacher or whoever asked you to do this is giving you a bad assignment. The entire purpose of making a chart or graph is to provide a visual representation of data, to make things easier for a reader to see or understand.

Pie charts are great for showing the percentage of a whole, such as how much of your money goes to whatever category in a budget, or what percentage each country contributes to the economy of the whole.

When comparing life expectancies as you mention here, each of the sectors of a pie chart take up less than half of it and might give a reader the impression that no one lives very long in any of these countries. (This point is accentuated in the case of having five or more countries in your data.) For a problem like this, a regular old column chart would give a reader a better view of the data involved.

Answer 3

If you have to put these data into a pie chart, take the sum of all your values and divide every value by it, then multiply by 100. This gives you your percentages - for instance, for 71,48.03,73 you get 37%, 25%, and 38%.

Of course, a pie chart isn't really the appropriate graph for something like LE, since there's not really a fixed total of LE for all countries. I'd suggest using a bar chart instead.

Answer 4

If her average after bowling 3 games was 135 that means she could have bowled anything that divided by 3 equals 135. For example: game 1: 140 game 2: 135 game 3: 130 So total she would have bowled 405. total combined gives u 405. 405 divided by 3 = 135

Answer 5

The first two answers are very good suggestions. And I agree a Bar Chart would be a better choice to represent your data.

Good Luck.

Answer 6

Use Excel-for tabulating the data-andconverting it into pie-chart- if u come online in Yahoo IM- sha_imr i can guide u

Answer 7

use excel for it.