A way to organize data sets ​

Stem and Leaf Plots

​Ex: one number is 7.

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What percent of the data is in the 20s?

What are the numbers in the data set for this plot? ​

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Finding percent of the data

Step 1: Count the total amount of numbers in the data set!

Step 2: Count only the amount of numbers in the set you want to know the percentage of.

Step 3: Make a fraction: denominator = the total number in the data set, numerator = the number in the set you want to know the percentage of

Step 4: Divide the numerator by the denominator, YOU SHOULD GET A DECIMAL!!!

Step 5: Move the decimal to the right one place value for the percent.​

​Students' scores on a test ^

What % of students scored above 70?​

What is the total amount of countries in the data set?

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How many countries had 80 and above athletes? ​

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You will use this to solve your next question​

What is the most common number of athletes in a country?

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