AnswersFL-2000315-Biology 1 CRHypotheses, Theories, and Laws

Experimental Design Principles Answers

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1
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Why is scientific notation used?

A
to round numbers to the nearest whole number
B
to promote reproducibility of data
C
to increase the validity of data
D
to express very large or very small numbers
2
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Renald completed only one trial of his experiment. What effect will this most likely have?

A
The results are more likely to have errors.
B
The results are more likely to be precise.
C
The experiment will be harder to replicate.
D
The experiment will be easier to replicate.
3

Which describes reproducibility?

A
The ability of data to be published.
B
The ability of data to be duplicated.
C
The ability of data to be changed.
D
The ability of data to be invalidated.
4

A scientist conducted one trial of an experiment and got unexpected results. How can the scientist increase confidence in the results?

A
by repeating the experiment several times
B
by changing the experimental procedure
C
by asking other scientists what they think about the results
D
by modifying the results so they are close to the expected results
5

What are two main purposes for using repetition when conducting experiments?

A
recording data easily and saving time
B
increasing confidence in results and recording data easily
C
reducing mistakes and increasing confidence in results
D
saving time and increasing confidence
6

What does it mean if data are reproducible but not accurate?

A
The data can be produced over and over but are not close to the accepted value.
B
The data are close to the accepted value but cannot be produced over and over.
C
The data are close to the accepted value and are close to one another.
D
The data are close to the accepted value but are not close to one another.
7

Which set of data is best described as accurate and precise when compared to an accepted value of 125?

A
130, 125, 109, 210
B
122, 126, 121, 123
C
125, 100, 109, 200
D
190, 190, 191, 192
8

Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10 is -10?

A
Move the decimal point to the left.
B
Move the decimal point to the right.
C
Add 20 to the number.
D
Subtract 20 from the number.
9

When 560,000 is written in scientific notation, what is the power of 10?

A
4
B
5
C
6
D
7
10

What is 6.9 × 107 written in standard form?

A
0.00000069
B
0.000069
C
6,900,000
D
69,000,000

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