Social Studies, 16.07.2019 16:40, eweqwoewoji

It is desirable, but not necessary, that sample sizes be equal in a one-factor anova. a. true b. false

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Mathematics, 19.08.2019 21:10, bella6786

To test whether the distribution of sample outcomes match a hypothesized distribution, the appropriate test is (a) one-factor anova (b) two- factor anova (c) goodness –of fit

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Mathematics, 28.11.2019 02:31, osirisarellane3792

7.43 true / false: anova, part i. determine if the following statements are true or false in anova, and explain your reasoning for statements you identify as false. (a) as the number of groups increases, the modified significance level for pairwise tests increases as well. (b) as the total sample size increases, the degrees of freedom for the residuals increases as well. (c) the constant variance condition can be somewhat relaxed when the sample sizes are relatively consistent across groups. (d) the independence assumption can be relaxed when the total sample size is large.

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Mathematics, 30.11.2019 06:31, emma5165

News reports speak of an emerging crisis of childhood obesity in the united states. the national health and nutrition examination survey (nhanes) is a government survey run every several years recording a number of vital statistics on a random sample of americans. a body mass index (bmi) is computed for each individual in the sample based on the individual's height and weight. here are sample results for 8- year-old boys over the past 40 years. (sem is the standard error of the mean.) suppose we want to run an anova to see if there is a difference in mean bmi for the three surveys survey n t semnhes ii, 1965 618 16.3 0.1nhanes ii, 1980 145 16.5 0.2 nhanes, 2002 214 18.4 0.4 (a) the distribution of bmi from each survey is somewhat right-skewed. is the normality condition met for an anova on this data? why? o yes, because the data was randomly gathered. o yes, because the anova procedures are robust to skewness for sample sizes over 30 o no, because skewness violates the normality condition even when the sample sizes are over 30 (b) recall that the standard error of the mean (sem) is equal to s ivn, where s is the standard deviation. what is the standard deviation for the nhes il study? the nhanes il study? the nhanes study? (use 3 decimal places) (use 3 decimal places) (use 3 decimal places) (c) do the standard deviations satisfy the guidelines for the use of anova? o no, because the largest standard deviation is less than twice the smallest standard deviation o no, because the largest standard deviation is more than twice the smallest standard deviation o yes, because the largest standard deviation is less than twice the smallest standard deviation o yes, because the largest standard deviation is more than twice the smallest standard deviation

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