1) In a normal distribution, most participants fall within +/- 1 standard deviation from the mean. True or False   2) If 81% of the variation in temperature can be accounted for by the variation in the number of hours of sunshine. This means that 19% of the variation is due to another factor not measured in this correlation. This factor represents: a. correlation coefficient b. Outliers c. third variable problem d. Standard deviation   3) In a standardized normal curve, the mean is replaced by what? a) median b) R value c) zero d) coefficient

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