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Mathematics, 01.09.2019 17:20 xaguilar

Which of the following statements about measures of validity is true?
a.
statistics, survey research, and scientific data can contain bias.
b.
statistics, survey research, and scientific data never contain bias.
c.
statistics and survey research always contain bias, but scientific data does not contain bias.
d.
survey research can contain bias, but statistics and scientific data do not contain bias

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Which of the following statements about measures of validity is true?
a.
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