Yes, because the data was randomly gathered.Yes, because the ANOVA procedures ar
ID: 3230883 • Letter: Y
Question
Yes, because the data was randomly gathered.Yes, because the ANOVA procedures are robust to skewness for sample sizes over 30 and there are no extreme outliers. No, because skewness violates the Normality condition even when the sample sizes are over 30.
(b) What is the sample standard deviations for each survey?
...the NHES II study? (Use 3 decimal places)
...the NHANES II study? (Use 3 decimal places)
...the NHANES study? (Use 3 decimal places)
(c) Do the standard deviations satisfy the guidelines for the use of ANOVA?
No, because the largest standard deviation is less than twice the smallest standard deviation.No, because the largest standard deviation is more than twice the smallest standard deviation. Yes, because the largest standard deviation is less than twice the smallest standard deviation.Yes, because the largest standard deviation is more than twice the smallest standard deviation.
NHANES surveys Survey Sample size Sample mean Sample SD 618 16.3 2.486 NHES II, 1965 NHANES 1980 145 16.5 2.408 214 18.4. NHANES. 2002 5.851Explanation / Answer
(a) The distribution of BMI from each survey is somewhat right-skewed. Is the Normality condition met for an ANOVA on this data? Why?
Ans: No, because skewness violates the Normality condition even when the sample sizes are over 30.
(b) What is the sample standard deviations for each survey?
...the NHES II study? 2.486 (Use 3 decimal places)
...the NHANES II study? 2.408 (Use 3 decimal places)
...the NHANES study? 5.851 (Use 3 decimal places)
(c) Do the standard deviations satisfy the guidelines for the use of ANOVA?
Ans:No, because the largest standard deviation is more than twice the smallest standard deviation
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