Savvas 8th Ch 2 L2 Mathematics and Scientific Thinking
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Last updated almost 3 years ago
10 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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A student on the archery team gets all her arrows in the same spot on the target. They are all outside the bull’s eye. Which best describes her results?
both accurate and precise
precise but not accurate
accurate but not precise
neither precise nor accurate
A student added the measurements 36.67 g and 4.1 g. Which of the following expresses the sum with the correct number of significant figures?
40.7 g
40.77 g
40.8 g
41 g
Which of the following shows the mean with the correct number of significant figures for the numbers 15.6, 14.1, 7.7, 12.9, 12.9?
12
12.6
12.64
12.7
A student calculated the density of tin to be 7.20 g/mL. The actual density of tin is 7.29 g/mL. Which of the following is his percent error?
0.01 percent
0.09 percent
1.23 percent
1.25 percent
An estimate is an approximation of a number based on reasonable assumptions.
True
False
Accuracy refers to how close a group of measurements are to each other.
True
False
The mean is the middle number in an ordered set of data.
True
False
The median appears most often in a list of numbers.
True
False
To find percent error, you subtract the true value from the experimental value and divide by the true value.
True
False
The anomalous data in a measurement include all digits measured exactly, and one estimated digit.