After a researcher adds 6 points to every score in a sample, the standard deviation is found to be s = 12. The original sample had a standard deviation of s = 6.
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Which of the following statements is correct regarding a bia…
Which of the following statements is correct regarding a biased statistic?
Multiplying every score in a sample by a constant value will…
Multiplying every score in a sample by a constant value will change the value of the standard deviation.
If sample variance were to be computed by dividing SS by n,…
If sample variance were to be computed by dividing SS by n, then the average value of the sample variances from all the possible random samples would consistently _____ the population variance.
A positive deviation score indicates that a score in a distr…
A positive deviation score indicates that a score in a distribution is less than the mean.
After a researcher multiplies every score in a sample by 3,…
After a researcher multiplies every score in a sample by 3, the standard deviation is found to be s = 3. The original sample had a standard deviation of s = 9.
If a person scores X = 80 on an exam with m = 75, they score…
If a person scores X = 80 on an exam with m = 75, they scored worse relative to others in the class if σ = 8 than if σ = 4.
In a sample with a mean of M = 4 made up of four scores, two…
In a sample with a mean of M = 4 made up of four scores, two scores are free to vary and the third and fourth scores are fixed.
The value for SS can be less than zero.
The value for SS can be less than zero.
For a population, a deviation score is computed as X – σ.
For a population, a deviation score is computed as X – σ.