Call Now to Set Up Tutoring:

(888) 888-0446

Algebra 1 : Statistics and Probability

Study concepts, example questions & explanations for Algebra 1

Create An Account

All Algebra 1 Resources

10 Diagnostic Tests 557 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #191 : Statistics And Probability

Solve for the mean: [2,-8,9,36]

Possible Answers:

$\frac{19}{2}$

$\frac{39}{4}$

$\textup{There cannot be negative numbers to solve for the mean.}$

$\frac{45}{4}$

Correct answer:

$\frac{39}{4}$

Explanation:

The mean is the average of all the numbers in the data set.

Add the numbers.

2+(-8)+9+36 = 39

Divide this number by four.

The answer is: $\frac{39}{4}$

Report an Error

Example Question #192 : How To Find Mean

Danielle has made a $\textup{50, 65, 60, and 55}$ on four of her six exams in one of her classes. The passing grade is a . Assuming 100 is the highest possible score, what must she at least average on her last two exams?

Possible Answers:

$\textup{Danielle cannot pass her class.}$

Correct answer:

Explanation:

Let be the unknown scores for Danielle's last two exams. Set up an equation such that the sum of all exam grades over six is equal to seventy, since this is the passing score.

$\frac{50+65+60+55+x+x}{6} = 70$

Multiply both sides by six.

$\frac{50+65+60+55+x+x}{6} \cdot 6= 70\cdot 6$

50+65+60+55+x+x=420

Sum the numbers.

230+2x = 420

Subtract 230 from both sides.

2x=190

Divide by two on both sides.

$\frac{2x}{2}=\frac{190}{2}$

Simplify both sides.

x=95

Danielle must average at least a on both her last two exams in order to pass her class.

Report an Error

Example Question #192 : Statistics And Probability

Find the mean to the following data set: [-3,3,10,13,23]

Possible Answers:

$\frac{43}{5}$

$\frac{49}{5}$

$\frac{46}{5}$

$\textup{No mean.}$

Correct answer:

$\frac{46}{5}$

Explanation:

The mean is the average of all the numbers in the data set.

Add all the numbers.

-3+3+10+13+23=46

Since there are five numbers, divide this number by five.

The answer is: $\frac{46}{5}$

Report an Error

Example Question #194 : How To Find Mean

Solve for the mean: [-9,-1,1000]

Possible Answers:

$\frac{1010}{3}$

990

330

9000

3000

Correct answer:

330

Explanation:

The mean is the average of all the numbers given in the data set.

Add the numbers.

-9+(-1)+1000 = -10 +1000 = 990

Divide this number by three.

$\frac{990}{3} = 330$

The mean is: 330

Report an Error

Example Question #195 : How To Find Mean

Find the mean of the numbers: [-19,36,14,-5]

Possible Answers:

$\frac{13}{2}$

$\frac{26}{5}$

$\frac{8}{3}$

$-\frac{1}{2}$

$-\frac{26}{5}$

Correct answer:

$\frac{13}{2}$

Explanation:

Write an expression to sum the numbers. Enclose the negative numbers in parentheses.

(-19)+36+14+(-5) = 26

Divide this number by four.

$\frac{26}{4}$

Reduce this fraction. Both the numerator and denominator are divisible by two.

$\frac{26}{4}=\frac{13\times 2}{2\times 2}$

Cancel out the twos.

The answer is: $\frac{13}{2}$

Report an Error

Example Question #196 : How To Find Mean

Find the mean of the numbers: [0,0,0,1,1,1,2,3,4]

Possible Answers:

0,1

$\textup{There is no mean.}$

$\frac{3}{2}$

$\frac{4}{3}$

Correct answer:

$\frac{4}{3}$

Explanation:

The mean is the sum of all the numbers divided by the total amount of numbers in the data set. It is also the average.

Add the numbers.

0+0+0+1+1+1+2+3+4=12

There are nine numbers provided.

Divide the sum with nine.

$\frac{12}{9} = \frac{4}{3}$

The mean is: $\frac{4}{3}$

Report an Error

Example Question #197 : How To Find Mean

Cheryl has made it her goal to make an or higher in her math class. Her final grade is based on the average of four tests. If on the previous three tests she received grades of 76,91,83 , what is the minimum score she must receive on her final test in order to achieve her goal?

Possible Answers:

Correct answer:

Explanation:

The best way to solve this is to first determine what her final total score should be. If she needs an average of , with a total of tests, she must achieve a total score of 340 (which is $85\cdot4$ ). Then, to determine what score she must achieve on the final test, we simply subtract her previous scores. 340-(76+91+83)=340-250=90 . So her final score must be at least if she is going to achieve her goal.

Report an Error

Example Question #193 : Statistics And Probability

David's final math score is based on the average (or mean) of five tests. He has gotten the following scores: 57,85,90,76,82 . What is his final math score?

Possible Answers:

390

Correct answer:

Explanation:

To find the average, we simply add all of the scores together and divide by the number of tests (in this case ). We find a sum of 390 , and when we divide by 5, we find a final average score of .

Report an Error

Example Question #194 : Statistics And Probability

Find the mean of the set of data:

4, 14, 8, 4, 2, 15, 18, 20, 5, 10

Possible Answers:

9.5

100

Correct answer:

Explanation:

Add up all of the values in the data set and divide the sum by the number of values of the set.

4+ 14+8+4+2+15+ 18+ 20+ 5+ 10 = 100

$100 \div 10 = 10$

Report an Error

Example Question #200 : Statistics And Probability

Find the mean of the following data set:

16,77,83,16,23,99,55,77,23,16

Possible Answers:

48.5

Correct answer:

48.5

Explanation:

Find the mean of the following data set:

16,77,83,16,23,99,55,77,23,16

Whenever we are working with a data set, it can be helpful to put the terms in order:

16,16,16,23,23,55,77,77,83,99

Now that our terms are in order, we can do all sorts of things with them.

In this case, we need to find the mean. This is essentially the same as the average.

Begin by finding the sum of our terms.

16+16+16+23+23+55+77+77+83+99=485

Now, because we have ten terms, we need to divide by 10

$\frac{485}{10}=48.5$

Report an Error

View Algebra Tutors

Robert
Certified Tutor

University of Pittsburgh, Bachelor of Science, Physics.

View Algebra Tutors

Sumit
Certified Tutor

Calcutta University, Bachelor of Science, Mathematics. Indian Statistical Institute, Master of Science, Mathematics.

View Algebra Tutors

Celestine
Certified Tutor

University of Ghana, Bachelor of Science, Agricultural Economics. University of Minnesota-Twin Cities, Doctor of Philosophy, ...

All Algebra 1 Resources

10 Diagnostic Tests 557 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

Spanish Tutors in Chicago, English Tutors in Houston, French Tutors in Atlanta, ACT Tutors in Dallas Fort Worth, Reading Tutors in Atlanta, SSAT Tutors in Miami, Math Tutors in Washington DC, SSAT Tutors in San Francisco-Bay Area, Reading Tutors in Phoenix, Chemistry Tutors in Miami

Popular Courses & Classes

LSAT Courses & Classes in San Diego, GMAT Courses & Classes in Phoenix, ACT Courses & Classes in Dallas Fort Worth, GRE Courses & Classes in Miami, SSAT Courses & Classes in Denver, LSAT Courses & Classes in Boston, SAT Courses & Classes in Chicago, SSAT Courses & Classes in Phoenix, Spanish Courses & Classes in Dallas Fort Worth, SSAT Courses & Classes in Chicago

Popular Test Prep

ACT Test Prep in Dallas Fort Worth, ACT Test Prep in Los Angeles, GMAT Test Prep in Phoenix, SSAT Test Prep in Phoenix, GRE Test Prep in Washington DC, MCAT Test Prep in Denver, GMAT Test Prep in Houston, LSAT Test Prep in Phoenix, SAT Test Prep in Denver, ISEE Test Prep in Atlanta

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

HIGH SCHOOL

GRADUATE SCHOOL

K-8

Search 50+ Tests

math tutoring

science tutoring

foreign languages

elementary tutoring

other

Search 350+ Subjects

Algebra 1 : Statistics and Probability

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #191 : Statistics And Probability

Example Question #192 : How To Find Mean

Example Question #192 : Statistics And Probability

Example Question #194 : How To Find Mean

Example Question #195 : How To Find Mean

Example Question #196 : How To Find Mean

Example Question #197 : How To Find Mean

Example Question #193 : Statistics And Probability

Example Question #194 : Statistics And Probability

Example Question #200 : Statistics And Probability

All Algebra 1 Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: