Algebra 1 : Statistics and Probability
Study concepts, example questions & explanations for Algebra 1
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Example Questions
Example Question #1 : How To Find Mean
What is the mean of 44, 22, 134, and 200?
144
66
88
100
100
To find the mean, you must add all of the numbers together and divide by the amount of numbers. In this case there are four numbers so, we must deivide the total sum by 4.
Example Question #1 : Statistics And Probability
Calculate the mean of the following numbers: 11, 13, 16, 13, 14, 19, 13, 13
First, calculate the sum of all of the numbers.
Next, divide by the total number.
Example Question #1 : Statistics And Probability
Find the mean of this number set: 2, 5, 6, 7, 7, 3
The numbers add up to 30. To find the mean, divide by the number of numbers (6) and you get a mean of 5. Mean is a fancy way of saying average.
Example Question #2 : Statistics And Probability
The class average in a class of 15 is 86%. If one additional student earns a 100% in the class, what is the new class average.
None of the available answers
There is not enough information to answer this question
We can treat this as if the entire class had exactly 86% as their average, so the new average is:
Example Question #4 : How To Find Mean
What is the mean of the following numbers?
88,99,31,47,68,27
To find the mean you add all of the numbers together and divide it by the amount of numbers. In this case there are six numbers so
The answer is 
Example Question #3 : Statistics And Probability
Example Question #4 : Statistics And Probability
Example Question #1 : Statistics And Probability
The sum of the elements of a data set is 
It is impossible to tell from the imformation given.
The mean, 
We know that 
Example Question #1 : How To Find Mean
Two standard dice are rollled. What is the probability that the sum of both dice is greater than 
There are 
5 and
There are 
Example Question #8 : Statistics And Probability
Is the following method for collecting data biased? If so, why?
A company would like to assess the approval of their new product. To determine if customers were happy with their product, they placed a link on their website to all consumers to opt-in to provide their opinion.
Yes; this is an example of exclusion bias.
No; the collection method is not biased.
Yes; this is an example of selection bias.
Yes; this is an example of analytical bias.
Yes; this is an example of selection bias.
Because this is an "opt-in" study, certain individuals are more likely to participate than others resulting in a selection bias.
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