GED Math : Statistics

Study concepts, example questions & explanations for GED Math

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Example Questions

Example Question #32 : Other Data Calculations

Find the range of the numbers:  

Possible Answers:

Correct answer:

Explanation:

The range is the difference between the largest and smallest numbers given.

The largest number is negative 2.

The smallest number is negative 15.

Subtract both numbers.

The range is .

Example Question #202 : Calculations

Determine the range of the following numbers:  

Possible Answers:

Correct answer:

Explanation:

The range is the difference between the largest and smallest numbers.

The largest number is:  

The smallest number is:  

Subtract both numbers.

The answer is:  

Example Question #203 : Calculations

Evaluate the range of the numbers:  

Possible Answers:

Correct answer:

Explanation:

The range is the difference between the largest and smallest numbers.

The largest number is 25.

The smallest numbers is:  

Subtract both numbers.

The answer is:  

Example Question #204 : Calculations

For a formal dinner that he is planning, James needs to choose among  different appetizers,  main courses, and  desserts. If the dinner has to have  of each, how many possible combinations can James choose?

Possible Answers:

Correct answer:

Explanation:

In order to find the total number of possibilities, we will need to multiply the number of choices together. Since we have  appetizers,  main courses, and  desserts, we can write the following to find the number of total possibilities:

There are  total possibilities for the three-course dinner.

Example Question #205 : Calculations

A basketball coach is trying to name a captain, a co-captain, and then a team manager from a pool of  students. If each student can only hold one post, how many different ways can the coach pick these three positions?

Possible Answers:

Correct answer:

Explanation:

Starting with the captain, the coach will have  total choices.

Since the coach will have chosen the captain, there are  total choices for co-captain.

Afterwards, the coach will only have  total choices for the team manager.

Thus, multiply these numbers together to get the total number of combinations possible for these three positions.

Example Question #206 : Calculations

The sales of a construction supply company are shown for the first six months of a year:


What is the percent change in sales between March and April?

Possible Answers:

Correct answer:

Explanation:

Start by finding the amount that the sales increased from March to April.

To find the percent change, divide the amount increased by the original value from March, then multiply the value by .

Sales increased by .

 

Example Question #201 : Statistics

Approximately what percent of respondents prefers McDonald's?

Question_12

Possible Answers:

Correct answer:

Explanation:

The percentage of respondents who answered McDonald's is between  and based on the size of the sector in the pie chart. There is only one answer choice that falls within these guidelines:

Example Question #202 : Statistics

Graph

The above graph represents the results of the senior class election at Washington High. According to the rules, the candidate who receives the most votes will become the class president; the candidate who finishes second will become the class vice-president; the candidate who finishes third will become the class secretary-treasurer.

Who will be the secretary-treasurer?

Possible Answers:

Franklin

Lamont

Johns

Carson

Correct answer:

Johns

Explanation:

The wedges, in descending order by size, are those representing Hall, Lamont, Johns, Franklin, Carson. Johns, therefore, finished third, and will be the secretary-treasurer.

Example Question #1 : Pie Charts

Graph

The above graph represents the results of the student body election at Big State College. According to the rules, if a candidate receives over 50% of the vote, (s)he will win outright. If no candidate receives over 50% of the vote, there will be a runoff election between the top two finishers. 

Which of the following is the result of the election?

Possible Answers:

Hall and Johns will face each other in a runoff.

Hall and Lamont will face each other in a runoff.

Lamont won outright.

Hall won outright.

Correct answer:

Hall and Lamont will face each other in a runoff.

Explanation:

The largest wedge of the circle graph is green, which, according to the legend, represents Hall. However, it is less than half of the graph, so he did not win outright. He will face his most successful opponent - Lamont, whose bright blue wedge is the second-largest (though not by much) - in a runoff.

Example Question #2051 : Ged Math

Graph

The above represents the results of a student council election at Jefferson High. According to the results, the top three finishers will be awarded seats on the student council. 

Which two did not win a seat on the student council?

Possible Answers:

Johns and Carson

Franklin and Carson

Franklin and Johns

Lamont and Carson

Correct answer:

Franklin and Carson

Explanation:

The wedges, in descending order by size, are those representing Hall, Lamont, Johns, Franklin, Carson. Hall, Lamont, and Johns were elected to the student council, so the correct choice is Franklin and Carson.

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