ISEE Middle Level Math : Range

Study concepts, example questions & explanations for ISEE Middle Level Math

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Example Questions

Example Question #2 : Data Analysis

On the last day of school,Adam asked each of his classmates how many days of school they missed for the entire school year.  He created a stem-and-leaf plot with the information.

0 | 0 0 2 4 5 6 8

1 | 0 0 1 2

2 | 3

4 | 7

What is the range of the number of days missed by Adam's classmates?

Possible Answers:

\dpi{100} 47\displaystyle \dpi{100} 47

\dpi{100} 0\displaystyle \dpi{100} 0

\dpi{100} 8\displaystyle \dpi{100} 8

\dpi{100} 7\displaystyle \dpi{100} 7

Correct answer:

\dpi{100} 47\displaystyle \dpi{100} 47

Explanation:

To find the range of a set of data, simply subtract the smallest total from the largest total.  The left side of a stem-and-leaf plot represents the ten's digit, and the right side represents the one's digit. The largest value here is 47.  The smallest value is 0. 

\dpi{100} 47-0=47\displaystyle \dpi{100} 47-0=47

Example Question #1 : How To Find Range

Find the range in this set of numbers:

4520, 7325, 8732, 8321, 9031, 3117, 6960

Possible Answers:

\displaystyle 6000

\displaystyle 5914

\displaystyle 7325

\displaystyle 6858

Correct answer:

\displaystyle 5914

Explanation:

First order the numbers from least to greatest:

\displaystyle 3117, 4520, 6960, 7325, 8321, 8732, 9031

Then find the difference of the greatest and the smallest number:

\displaystyle 9031-3117=5914

 

Answer: The range is 5914.

Example Question #1 : Data Analysis

Find the range in this set of numbers:

6059, 6609, 6906, 6509, 6905, 6960, 6950

Possible Answers:

\displaystyle 6699

\displaystyle 6906

\displaystyle 901

\displaystyle 991

\displaystyle 6905

Correct answer:

\displaystyle 901

Explanation:

First, order the numbers in the set from least to greatest:

\displaystyle 6059, 6509, 6609, 6905, 6906, 6950, 6960

Then, find the difference between the largest and the smallest number:

\displaystyle 6960-6059=901

Answer: The range is 901.

Example Question #2 : How To Find Range

Find the range in this set of numbers:

640, 782, 411, 398, 299, 344

Possible Answers:

\displaystyle 398

\displaystyle 479

\displaystyle 411

\displaystyle 483

Correct answer:

\displaystyle 483

Explanation:

First, order the numbers from least to greatest:

\displaystyle 299, 344, 398, 411, 640, 782

Then, find the difference between the largest and smallest number:

\displaystyle 782-299=483

 

Answer: The range is 483.

Example Question #5 : Data Analysis And Probability

Find the range in this set of numbers:

9881, 9889, 9818, 9981, 9891, 9918, 9989, 9889, 9198

Possible Answers:

\displaystyle 790

\displaystyle 800

\displaystyle 791

Correct answer:

\displaystyle 791

Explanation:

First, order the numbers from least to greatest:

\displaystyle 9198, 9818, 9881, 9889, 9889, 9891, 9918, 9981, 9989

Then, find the difference of the largest and smallest number:

\displaystyle 9989-9198=791

Answer: The range is 791.

Example Question #3 : Data Analysis

Find the range in this set of numbers:

3343, 4434, 4334, 3343, 4343, 3434, 3334

Possible Answers:

\displaystyle 1000

\displaystyle 1090

\displaystyle 1100

\displaystyle 1110

Correct answer:

\displaystyle 1100

Explanation:

First, order the numbers from least to greatest:

\displaystyle 3334, 3343, 3343, 3434, 4334, 4343, 4434

Then, find the difference between the largest and the smallest number:

\displaystyle 4434-3334=1100

Answer: The range is 1100.

Example Question #1 : Data Analysis

Subtract the range from the mode in this set of numbers:

\displaystyle 6366,6336, 6366,6633,6333,6363,6669

Possible Answers:

\displaystyle 6006

\displaystyle 6030

\displaystyle 6303

\displaystyle 6300

Correct answer:

\displaystyle 6030

Explanation:

First, order the numbers from least to greatest:

\displaystyle 6333,6336,6363,6366,6366,6633,6669

Then, identify the mode (most recurring number): 6366

Then, identify the range (subtract the smallest number from the largest):

\displaystyle 6669-6333=336

Finally, subtract the range from the mode:

\displaystyle 6366-336=6030

Answer: 330

Example Question #7 : How To Find Range

Find the range for this set of numbers:

6363, 6336, 6366, 6633, 6333, 6363, 6663

Possible Answers:

\displaystyle 330

\displaystyle 333

\displaystyle 303

\displaystyle 300

Correct answer:

\displaystyle 330

Explanation:

First, order the numbers from least to greatest:

\displaystyle 6333, 6336,6363,6363, 6366, 6633, 6663

Then, find the difference of the largest and the smallest numbers:

\displaystyle 6663-6333=330

Answer: The range is 330.

Example Question #1 : Range

Find the range in this set of numbers:

9080, 9008, 9800, 9099, 9009, 9090, 9008

Possible Answers:

\displaystyle 800

\displaystyle 790

\displaystyle 792

\displaystyle 9080

Correct answer:

\displaystyle 792

Explanation:

First, order the numbers from least to greatest:

\displaystyle 9008, 9008, 9009, 9080, 9090, 9099, 9800

The, subtract the smallest number from the greatest:

\displaystyle 9800-9008=792

Answer: The range is 792.

Example Question #2 : Range

Find the range in this set of numbers:

\displaystyle 6776, 6677,6767, 6676, 6766, 6777,6677

Possible Answers:

\displaystyle 111

\displaystyle 101

\displaystyle 99

\displaystyle 100

Correct answer:

\displaystyle 101

Explanation:

First, order the numbers from least to greatest:

\displaystyle 6676, 6677, 6677, 6766, 6767, 6776, 6777

Then, find the difference between the largest and smallest number:

\displaystyle 6777-6676=101

Answer: The range is 101.

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