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SAT II Math I : SAT Subject Test in Math I

Study concepts, example questions & explanations for SAT II Math I

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Example Questions

Example Question #681 : Sat Subject Test In Math I

Find the mean of: $\{2,2,4,4,6,6,8,8,12,12,7,6,5,4,3,3,3,3,3,33,41\}$

Possible Answers:

$8.\overline {33}$

8.3

8.33

8.333

Correct answer:

$8.\overline {33}$

Explanation:

Step 1: Find the sum of all the numbers...

$2+2+4+4+6+6+8+8+12+12+7+\\6+5+4+3+3+3+3+3+33+41=175$

Step 2: Count how many numbers there are...

There are elements.

Step 3: Divide the total sum by the number of elements...

$\frac {175}{21}=8.\overline {33}$

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Example Question #682 : Sat Subject Test In Math I

Find the mean of the following set:

12, 5, 7, 15,21,17,16,13,12

Possible Answers:

13.1

16.9

Correct answer:

13.1

Explanation:

Another word for mean is average. To find the average of this set of numbers, add them up, then divide by the amount of numbers in the set. In this case there are 9 numbers in the set, meaning we will divide our answer by 9.

$\frac{12+5+7+15+21+17+16+13+12}{9}=$

$\frac{118}{9}=13.1$

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Example Question #683 : Sat Subject Test In Math I

Find the mean of the following set:

41,38,27,42,35,38,44

Possible Answers:

37.9

31.7

34.9

Correct answer:

37.9

Explanation:

Another word for mean is average. To find the average of this set of numbers, add them up, then divide by the amount of numbers in the set. In this case there are 7 numbers in the set, meaning we will divide our answer by 7.

$\frac{41+38+27+42+35+38+44}{7}=\frac{265}{7}=37.9$

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Example Question #684 : Sat Subject Test In Math I

Find the mean of the following set:

6,91,12,31,12

Possible Answers:

30.4

25.3

24.6

Correct answer:

30.4

Explanation:

Another word for mean is average. To find the average of this set of numbers, add them up, then divide by the amount of numbers in the set. In this case there are 5 numbers in the set, meaning we will divide our answer by 5.

$\frac{6+91+12+31+12}{5}=\frac{152}{5}=30.4$

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Example Question #685 : Sat Subject Test In Math I

Determine the mean of the following numbers: [4,1,25,2,10,15]

Possible Answers:

$\frac{57}{3}$

$\frac{25}{2}$

$\frac{19}{2}$

Correct answer:

$\frac{19}{2}$

Explanation:

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

Add all the numbers and divide by 6.

$\frac{4+1+25+2+10+15}{6} = \frac{57}{6} = \frac{19\times 3}{2\times 3}$

The answer is: $\frac{19}{2}$

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Example Question #686 : Sat Subject Test In Math I

Determine the mean of the numbers: [9,-6,-3,-11]

Possible Answers:

$\frac{11}{4}$

$\textup{The mean does not exist.}$

$-\frac{11}{4}$

$\frac{29}{4}$

Correct answer:

$-\frac{11}{4}$

Explanation:

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

Add the numbers provided.

9+(-6)+(-3)+(-11) = -11

Divide this value by four.

$\frac{-11}{4}$

The answer is: $-\frac{11}{4}$

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Example Question #687 : Sat Subject Test In Math I

Determine the mean of the following numbers: [-2,-6,11,13,2,0]

Possible Answers:

$\frac{17}{3}$

$\frac{18}{5}$

Correct answer:

Explanation:

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

Add all the numbers and divide by six.

-2+(-6)+11+13+2+0 = 18

$\frac{18}{6}=3$

The answer is:

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Example Question #686 : Sat Subject Test In Math I

What is the median of 13, 12, 22, 7, 7, 8, 13, 27, 30?

Possible Answers:

Correct answer:

Explanation:

The median is middle number of a set, when the numbers are arranged in order from least to greatest.

In our case we re arrange our numbers in the following fashion:

7, 7, 8, 12, 13, 13, 22, 27, 30

The middle number in our case is the 5th entry.

Therefore, the median is 13

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Example Question #2 : Median

What is the median of 3, 7, 6, 11, 14, 9?

Possible Answers:

Correct answer:

Explanation:

The median is the middle number in a set of numbers when arranged in order from least to greatest.

In our case we get

3, 6, 7, 9, 11, 14

This set has two middle numbers 7 and 9. From here we need to find the average between these two numbers to find our median:

$\frac{7+9}{2}=\frac{16}{2}=8$

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Example Question #3 : Median

What's the median?

13, 2, 16, 8, 34, 26

Possible Answers:

14.5

11.5

Correct answer:

14.5

Explanation:

Median is to find the middle number arranging from smallest to greatest. So we have 2, 8, 13, 16, 26, 34 . The two middle numbers in the set is 13, 16 . We then find the average which is $\frac{29}{2}$ or 14.5 .

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All SAT II Math I Resources

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SAT II Math I : SAT Subject Test in Math I

Study concepts, example questions & explanations for SAT II Math I

All SAT II Math I Resources

Example Questions

Example Question #681 : Sat Subject Test In Math I

Example Question #682 : Sat Subject Test In Math I

Example Question #683 : Sat Subject Test In Math I

Example Question #684 : Sat Subject Test In Math I

Example Question #685 : Sat Subject Test In Math I

Example Question #686 : Sat Subject Test In Math I

Example Question #687 : Sat Subject Test In Math I

Example Question #686 : Sat Subject Test In Math I

Example Question #2 : Median

Example Question #3 : Median

All SAT II Math I Resources

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