Problem

PREREQUISITE SKILL Find the mean, median, mode, a…

02:04

Problem 61 Hard Difficulty

PREREQUISITE SKILL Find the mean, median, mode, and range for each set of
data. Round to the nearest hundredth, if necessary. (Pages 759 and 760 )
$$
80,50,65,55,70,65,75,50
$$

Answer

mean: 63.75
, median: 65
, mode: 50 and 65
, range: 30

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Intro Stats / AP Statistics

Algebra

Chapter 12

Probability and Statistics

Section 5

Adding Probabilities

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Video Transcript

So this problem, we're going to be finding the mean median load and a range of the given set of numbers. So the given numbers are 80 50 50 jobs are 65 55 70 65 75 50. So in order to find the mean, we wouldn't add all of these numbers up and divide them by the amount of numbers in the data set. So there's 12345678 So you want to divide all of them by eight. When you put that into your calculator, you should get 519 over eight, and that is equal to 63.75 rounded to the nearest 100th. Like the problem says the median. Well, you have to. You have to order all the numbers from least two greatest and then find the middle number. Or, if there are two numbers, find the average between them. So 50 50 55 65 65 70 75 80. So start by crossing one off the end, one at a time, and we're left with two numbers in the middle. But the average of 65 by 65 is going to just be 65. So that is our medium. Our mode is going to be the highest number subtracted from the lowest of the lowest number subtracted from the highest number. So a T minus 50 are no sorry. That is the range that is the range the mode is. The amount is the most frequent number in the data set. So you have to fifties 1 35 to 65 1 71 75 1 80 So you're going to your mode is going to be both of those numbers because they both occurred the same amount of times your range is going to be your lowest number subtracted from your highest number. So your range is going to be a T minus 50 which is equal to 30. She arranges 30. That is how you find all the data values in this set

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