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Experimental Design Principles Answers

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What is 18,000 expressed in scientific notation?

1.8 × 10–4

1.8 × 104

1.8 × 10–5

1.8 × 105

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Maya tried to hit four golf balls into a hole marked with a flag. The diagram shows where the golf balls landed.

high precision, low accuracy

low precision, high accuracy

high precision, high accuracy

low precision, low accuracy

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

recording data easily and saving time

increasing confidence in results and recording data easily

reducing mistakes and increasing confidence in results

saving time and increasing confidence

Renald completed only one trial of his experiment. What effect will this most likely have?

The results are more likely to have errors.

The results are more likely to be precise.

The experiment will be harder to replicate.

The experiment will be easier to replicate.

Which describes reproducibility?

The ability of data to be published.

The ability of data to be duplicated.

The ability of data to be changed.

The ability of data to be invalidated.

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

Move the decimal point to the left.

Move the decimal point to the right.

Add 20 to the number.

Subtract 20 from the number.

What does it mean if an experiment exhibits reproducibility?

The experimental conditions are simple and do not require a lot of materials.

The experimental conditions are always kept the same.

The results of the experiment are always accurate.

The same results are expected each time the experiment is done.

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

130, 125, 109, 210

122, 126, 121, 123

125, 100, 109, 200

190, 190, 191, 192

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

by repeating the experiment several times

by changing the experimental procedure

by asking other scientists what they think about the results

by modifying the results so they are close to the expected results

Which describes the best approach when conducting a scientific experiment?

conduct repeated trials and make sure the experiment can be replicated

conduct a single trial and make sure the experiment can be replicated

conduct repeated trials and make sure the experiment cannot be replicated

conduct a single trial and make sure the experiment cannot be replicated

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Experimental Design Principles Answers

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