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Experimental Design Principles Answers

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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.

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Why is scientific notation used?

to round numbers to the nearest whole number

to promote reproducibility of data

to increase the validity of data

to express very large or very small numbers

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

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.

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

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

A scientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. Another scientist conducted the same experiment and got similar results.

repetition

replication

precision

validity

Which two characteristics of data always occur together?

high accuracy and high precision

high precision and good validity

low accuracy and low precision

low accuracy and good validity

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Experimental Design Principles Answers

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