Practice question #7 Write “True” or “False” next to each statement: A. If a data distribution is normal, then approximately 68% of the observations are within 1 standard deviation of the mean. B. When assessing the fit of a least squares regression line by looking at its residual plot, you hope to see a strong pattern within the points on the residual plot. C. The central limit theorem states that when n is large, the sampling distribution of ?̅ is well approximated by a normal curve, even when the population distribution is not normal. D. Random assignment of subjects to treatments is a critical component of a good experiment which allows you to talk about cause and affect.
Practice question #7
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Write “True” or “False” next to each statement:
A. If a data distribution is normal, then approximately 68% of the observations are within 1 standard deviation of the mean.
B. When assessing the fit of a least squares regression line by looking at its residual plot, you hope to see a strong pattern within the points on the residual plot.
C. The central limit theorem states that when n is large, the sampling distribution of ?̅ is well approximated by a normal curve, even when the population distribution is not normal.
D. Random assignment of subjects to treatments is a critical component of a good experiment which allows you to talk about cause and affect.
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