Which of the following is the mean of the test scores listed below? 100, 78, 47, 84, 93, 78
A. 80
B. 78
C. 96
D. 87
The mean of a data set is the total scores divided by the number of tests.
Total test scores =100+78+47+84+93+78=480
Number of tests =6
Mean test score =480/6=80
The mean test score is 80.
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Math
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Q #1: Which of the following is the decimal equivalent of 7/25?
A. 0.28
B. 3.4
C. 3.57
D. 0.18
Answer Explanation
7/25 is the same as 7÷
25. The value becomes 0.28.Thus, 0.28 is the decimal equivalent of 7/25.
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Q #2: Which of the following is the best approximation of 10 times the positive square root of 20?
A. 100.0
B. 44.7
C. 200.0
D. 89.4
Answer Explanation
We use the calculator to determine the positive square root of 20, which is then multiplied by 20.
Using the calculator,
Multiplying the square root above with 10 becomes
The approximate value is 44.7.
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Q #3: Which of the following is the best estimate of the number of centimeters (cm) in 1 yard? (Note: 1 yard=3 feet; 1 foot =12 inches; 1 inch =2.54 cm)
A. 72 cm
B. 180 cm
C. 36 cm
D. 90 cm
Answer Explanation
We convert the given value in yard to the cm using the following set up.
The value 91.44 cm is close to 90 cm. Therefore, 1 yard is approximately 90 cm.
