Analysis of variance is the appropriate statistical test to determine whether
a. the difference between two sample means is statistically significant.
b. the difference between three sample means is statistically significant.
c. two sample means have the same score distribution.
d. a Type I error occurred.
b
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Attrition is a problem for longitudinal studies because
A. all participants are not at equal risk of being lost from the study over time. B. you cannot add new measures to the study as it goes on. C. all groups in the study must be as much the same as you can possibly make them. D. it creates a cohort effect among the participants.
During the influential earliest years (birth to 7), what does Steiner value as an essential task of adults in the child's world?
a. Ensuring safety through carefully designed rules b. Creating brightly colorful settings with plentiful posters and visual stimulation c. Creating stimulating spaces infusing the latest technologies and books d. Protecting the child from unhealthful or inappropriate experiences and stimuli
A big factor working against local responsibility for building school facilities has been the low assessed valuations in thousands of small school districts. Regardless of the statutes and the willingness of people to tax themselves, bonding small to build school buildings in small districts was often mathematically impossible
a. True b. False
What is the most appropriate graph to present preference of potential car buyers for three different sports cars?
What will be an ideal response?