Algebra 1 : Statistics and Probability

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #38 : How To Find Median

What's  if median is ?

Possible Answers:

Correct answer:

Explanation:

Let's arrange in increasing order. Remember with negative numbers, the bigger the value, the smaller it is. So we have . The reason it's arranged like this is because we have an odd number set and the median is  which we will let  to be.

Example Question #39 : How To Find Median

What is the median of the first five prime numbers?

Possible Answers:

Correct answer:

Explanation:

Prime numbers are numbers with factors of one and itself.  is not a prime number so we start with . The next four numbers are . The middle number is the third one in the set which is  and our answer. 

Example Question #32 : How To Find Median

Find the median of the numbers .

Possible Answers:

Correct answer:

Explanation:

The median is the number in the middle when listing the set in order.

In order, the numbers are:

so 3 is the median.

Example Question #41 : How To Find Median

What's the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are arranged in increasing order.

There are five numbers, so the middle is the third number which is 

Example Question #42 : How To Find Median

Whats the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are arranged in increasing order.

There are seven numbers, so the middle is the fourth number which is 

Example Question #43 : How To Find Median

What's the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are arranged in increasing order.

There are six numbers, so the middle is the third and the fourth number.

In this case, we take the average of the two numbers and we get

 

Example Question #44 : How To Find Median

What's the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are arranged in increasing order.

There are six numbers, so the middle is the third and the fourth number.

In this case, we take the average of the two numbers and we get 

Example Question #1673 : Algebra 1

What's the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are not arranged in increasing order.

The order is

There are six numbers, so the middle is the third and the fourth number.

In this case, we take the average of the two numbers and we get 

Example Question #1674 : Algebra 1

What's the median?

Possible Answers:

Correct answer:

Explanation:

Median is the middle number in an increasing set. In the set, the numbers are not arranged in increasing order.

The order is .

Remember when ordering negative number, the bigger the negative, the smaller the number it is. 

There are six numbers, so the middle is the third and the fourth number.

In this case, we take the average of the two numbers and we get 

Example Question #245 : Statistics And Probability

What's  if the median is ?

Possible Answers:

Correct answer:

Explanation:

Let's arrange this in increasing order. We have . Since we want a median of , we can insert  between . The reason is if we put  between any others, the maximum value of  will either be less than  on the left or greater than  on the right. We need to average those two values since we have an even amount of numbers in the set. So the middle numbers in the set is . Let's take the average and set it equal 

 Cross multiply.

 Subtract both sides by .

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