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A propotion is a math method. For example 3 over 100 = x over 50, you crossmultipy both 3 times 50 and 100 times x, then you'll get 150 = 100x, then you have to get x by itself so you divide 100 from both sides and that leaves you with x = 1.5 The proportion in this problem is 3 over 100 = x over 50
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The fact that probabilities are proportions means that they?
The fact that probabilities are proportions means that they are less than or equal to 1.
Why are pie charts useful and important?
To show classes or groups of data in proportions.
What is most appropriate chart for proportions is it pie chart?
yeah the pie chart would do best in that category
Is there a statistical test to assess the difference between two ratios. I have numbers which are ratios and want to test whether there is a statistical difference between them?
You can use the z test for two proportions. The link below will do this test for you.
Why use chi-square?
the Chi Square distribution is a mathematical distribution that is used directly or indirectly in many tests of significance. The most common use of the chi square distribution is to test differences among proportions
