Validity is:
a. concerned with the relationships of random error with systematic error.
b. equal to the true score plus the systematic error.
c. equal to the true score plus systematic error minus random error.
d. concerned with the extent to which differences in scores reflect true differences in the characteristic.
e. concerned with the extent to which differences in scores reflect instability in the measurements.
Question 2
In a recent survey, individuals who brushed their teeth often under-reported the activity, while individuals who brushed their teeth less frequently over-reported their dental hygiene behavior. The possible cause for differences in scores could best be attributed to:
a. a true difference in the characteristic being measured.
b. differences due to situational factors.
c. differences due to temporary personal factors.
d. true differences in other relatively stable characteristics of the individuals.
e. differences due to variations in administration.
Absorption & Stripping Design Random packing materials
Discrete random variables- Probability Distribution Function
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Phylogenetic relationships among Hawaiian Drosophila species
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