GED Math Mean Median Mode and Statistics Quiz

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| Questions: 15 | Updated: May 7, 2026
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1. What is the mean of the following numbers: 12, 15, 18, 21, 24?

Explanation

To find the mean, sum all the numbers (12 + 15 + 18 + 21 + 24 = 90) and divide by the total count of numbers (5). This gives 90 ÷ 5 = 18, which represents the average value of the dataset.

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About This Quiz
GED Math Mean Median Mode and Statistics Quiz - Quiz

Master essential statistical concepts with this GED Math Mean Median Mode and Statistics Quiz. Learn to calculate and interpret measures of central tendency, including mean, median, and mode, along with data analysis skills needed for the GED exam. This quiz reinforces your ability to work with real-world data sets and... see moreunderstand how different statistical measures describe data distributions. see less

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2. Find the median of this data set: 5, 8, 12, 9, 3, 7, 11.

Explanation

To find the median, first, arrange the data set in ascending order: 3, 5, 7, 8, 9, 11, 12. The median is the middle value in a sorted list. With seven numbers, the fourth number is the median, which is 8. Thus, the median of the data set is 8.

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3. Which number appears most frequently in this set: 4, 7, 4, 9, 7, 4, 2?

Explanation

In the given set of numbers, 4 appears three times, while 7 appears twice, and both 2 and 9 appear only once. Since 4 occurs more frequently than any other number, it is identified as the mode of the set.

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4. A student's test scores are 78, 85, 92, 88, and 82. What is the mean score?

Explanation

To find the mean score, add all the test scores together: 78 + 85 + 92 + 88 + 82 = 425. Then, divide the total by the number of scores, which is 5. Thus, 425 ÷ 5 = 85, making 85 the mean score of the student's test results.

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5. The data set is: 10, 14, 14, 18, 22, 26. What is the mode?

Explanation

The mode of a data set is the number that appears most frequently. In this case, the number 14 appears twice, while all other numbers appear only once. Therefore, 14 is the mode of the data set, indicating it is the most common value.

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6. If the mean of five numbers is 16, what is the sum of all five numbers?

Explanation

To find the sum of five numbers when the mean is known, multiply the mean by the total count of numbers. Here, the mean is 16 and there are five numbers: 16 x 5 = 80. Thus, the sum of all five numbers is 80.

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7. For the data set 3, 5, 7, 9, 11, what is the median?

Explanation

To find the median, first arrange the data set in ascending order: 3, 5, 7, 9, 11. Since there are five numbers (an odd count), the median is the middle value. The third number in this ordered list is 7, making it the median of the data set.

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8. A data set has values: 20, 25, 30, 35, 40. The mean is ____ and the median is ____.

Explanation

To find the mean, sum the values (20 + 25 + 30 + 35 + 40 = 150) and divide by the number of values (150 ÷ 5 = 30). The median is the middle value in a sorted list. With five numbers, the third value (30) is the median. Thus, both the mean and median are 30.

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9. Which measure of central tendency is most affected by outliers?

Explanation

The mean is the average of a set of values and is calculated by summing all the numbers and dividing by the count. Outliers, which are extreme values, can significantly skew the mean, making it less representative of the data set. In contrast, the median and mode are less influenced by such extreme values.

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10. The range of a data set is the difference between the ____ and smallest values.

Explanation

The range of a data set measures the spread of values by calculating the difference between the highest (largest) and lowest (smallest) values. This provides insight into the variability within the data, indicating how spread out the values are from one another.

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11. If a data set has two modes, it is called ____.

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12. A store's daily sales for one week are: $450, $520, $480, $510, $490, $530, $500. What is the median daily sales?

Explanation

To find the median, first arrange the daily sales in ascending order: $450, $480, $490, $500, $510, $520, $530. Since there are seven values, the median is the fourth value in the ordered list, which is $510. This represents the middle point of the sales data for the week.

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13. Which of the following statements about the mean is true?

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14. A class has test scores: 88, 92, 76, 88, 95, 88. The mode is ____.

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15. For the ordered data set 2, 4, 6, 8, 10, 12, what is the median?

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What is the mean of the following numbers: 12, 15, 18, 21, 24?
Find the median of this data set: 5, 8, 12, 9, 3, 7, 11.
Which number appears most frequently in this set: 4, 7, 4, 9, 7, 4, 2?
A student's test scores are 78, 85, 92, 88, and 82. What is the mean...
The data set is: 10, 14, 14, 18, 22, 26. What is the mode?
If the mean of five numbers is 16, what is the sum of all five...
For the data set 3, 5, 7, 9, 11, what is the median?
A data set has values: 20, 25, 30, 35, 40. The mean is ____ and the...
Which measure of central tendency is most affected by outliers?
The range of a data set is the difference between the ____ and...
If a data set has two modes, it is called ____.
A store's daily sales for one week are: $450, $520, $480, $510, $490,...
Which of the following statements about the mean is true?
A class has test scores: 88, 92, 76, 88, 95, 88. The mode is ____.
For the ordered data set 2, 4, 6, 8, 10, 12, what is the median?
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