Algebra 1 : Algebra 1
Study concepts, example questions & explanations for Algebra 1
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Example Questions
Example Question #363 : Statistics And Probability
A teacher is grading quizzes and recording the scores in her records. The scores are recorded as follows: 81, 91, 83, 88, 74, 98, 81, 94, 68, 92, 77, 79, 83, 91, 81, 84, 85, 81, 85, 79, 83, 81, 83.
What is the mode?
The mode of a set of statistics is simply the most commonly occuring observation. In this case, what was the most common score on the quiz? We have 5 instances of 81, which is the most occurences of any particular number, thus our mode is 81.
Example Question #11 : Mode
Determine the mode of the set.
Mode refers to the number occuring most often, so in this example we are looking for the numbers that repeat and how many times they repeat.
Now because all three numbers repeated an equal amount of time, all three then become our mode.
Answer :
Example Question #362 : Statistics And Probability
We have the following set of numbers:
15, 14, 17, 17, 12, 19, 14, 10, 12, 17, 18, 9, 16, 12, 17.
Find the mode.
The mode is the number that appears the most in the number set. To figure out what number appears the most in our number set, it would help to rearrange the numbers so that the set is rewritten as
9, 10, 12, 12, 12, 14, 14, 15, 16, 17, 17, 17, 17, 18, 19
By looking at this number set, it seems that the number 17 is the most common number in the number set. It appears 4 times while other numbers such as 12 appear three times. Thus, 17 is the mode.
Example Question #1791 : Algebra 1
If you grab a pen at random from a box containing 4 red pens, 3 blue pens, and 5 black pens, what is the probability of choosing a blue pen?
There are 12 total pens (4 + 3 + 5 = 12). There 3 blue pens of the 12 total. The chances of grabbing a blue pen are 
Example Question #1 : Mode
What is the mode of the following data set?
{9, 10, 4, 11, 7, 5, 15, 7, 2, 20, 11, 19, 7, 9}
2
11
7
9
7 and 9
7
Arrange the set in numerical order: {2, 4, 5, 7, 7, 7, 9, 9, 10, 11, 11, 15, 19, 20}.
You can then chart the frequency of each value.
Value (Frequency)
2 (1)
4 (1)
5 (1)
7 (3)
9 (2)
10 (1)
11 (2)
15 (1)
19 (1)
20 (1)
From this you can see the most common value, which is the mode, is 7.
Example Question #6 : How To Find Mode
A set comprises ten elements, which are
where 
What can 
The set cannot be bimodal for any value of N.
12 appears in the set most frequently, appearing three times; 19 is second in frequency, appearing twice. 10, 11, 18, and 20 appear once each.
The only number we can set 
Example Question #1 : Mode
Within the set of data of the hours worked per week by the staff, what is the mode?
Mode is a value that appears most often in a set of data.
In this case, 40 appears 4 times in the set of data, more than any other number.
Example Question #2 : Mode
Example Question #11 : How To Find Mode
What is the mode?
None
None
Mode is the data point that occurs most frequently. In this case each data point occurs only once, so there is no mode. Answer is none.
Example Question #14 : How To Find Mode
What is the mode
None
Mode is the data point that occurs most frequently. According to the data, we have 
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