Algebra 1 : Algebra 1
Study concepts, example questions & explanations for Algebra 1
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Example Questions
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.
Example Question #11 : How To Find Mean
The above chart shows a specific week of work at an advertising firm. What is the mean hourly rate of the female staff members?
Example Question #12 : How To Find Mean
The average score on a math exam for 5 students is 90. If the sixth student earned a score of 84, what is the average score for all 6 students?
None of the other answers
The average of the first 5 students' scores is 90, which means that the total score for these 5 students is 450. To find the total score of all 6 students, you simply add the sixth student's score of 84 to the first 5 students' total score of 450, which gives you a total score of 534 for all 6 students. To determine the average score, you must divide the total score of 534 by 6, which gives you an average score of 89.
Example Question #11 : Statistics And Probability
Abe, George, and Tom took an algebra test last week and scored an average of 90. If Abe earned a score of 92 and George earned a score of 94, what was Tom's score on the test?
Since they had an average score of 90, we know that their total score must have been 270 (90 multiplied by 3). We know that 2 of the scores are 94 and 92, so the third score must be 
Example Question #2 : Basic Statistics
The mean of the set 
To find mean, we add up the values in a set and divide by the number of terms in that set. We begin this problem with the knowledge that the mean of the first set is 20. Since that set contains five numbers, we know that its total sum must be 100 (since 100 divided by 5 is 20).
so 
Now, the only step left is to find the mean of 
These values add up to 125, and when we divide by 5, we are left with a final answer of 25.
Example Question #11 : How To Find Mean
If 
If we substitute 3 in for 
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