## PSY 325 Week 3 Assignment ANOVA Article Critique

PSY 325 Week 3 Assignment ANOVA Article Critique

**ANOVA Article Critique. Read the article “Cognitive Effects of Risperidone in Children with Autism and Irritable Behavior”, and identify the research questions and/or hypotheses as they are stated. Consider the following questions: What are the variables (sample sizes, population, treatments, etc.)? How was the analysis of variance used in this article (and what type of ANOVA was used)?**

**Write a two- to three-page paper presenting the information listed below. In addition, provide a title page and reference page in APA style. Cite any references made to the article within the body of the paper in APA style. Your paper should begin with an introductory paragraph (including a thesis statement) and end with a concluding paragraph summarizing the major points made in the body of the paper and reaffirming the thesis**

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**PSY 325 Week 2 Quiz Set 1**

**1. Question : The table value z = .70 is .2580. The z = .70 value occurs at what equivalent percentile?**

**2. Question : Rejecting the null hypothesis is the same as saying _____________.**

**3. Question : If the z transformation is used with population data, M is replaced by what symbol?**

**4. Question : How does the standard normal distribution differs from other normal distributions?**

**5. Question : A one-sample t value is statistically significant in which situation?**

**6. Question : All standard scores have which characteristic in common?**

**7. Question : If x = 12, M = 10 and s = 2, z = _______.**

**8. Question : The distribution of sample means refers to _______________.**

**9. Question : A distribution where the mean and standard deviation have pre-determined values calls for ________. **

**10. Question : If the mean of the distribution of sample means isn’t given, how is it determined?**

**PSY 325 Week 2 Quiz Set 2**

** **

**Question :The table value z = .70 IS 2580. What percent of the population occurs below that point?**

**The z-test asks whether the population from which thesample was drawn has the same mean as the population to which it is compared True.**

**Question 3**

**4. Based on past experience, the probability that the sun will rise tomorrow is?**

**5 Rejecting the null hypothesis is the same as saying?**

**6 How many standard deviations below is 3 if z= -1.75**

**7 Degrees of Freedom refers to**

** How many values can vary**

**8 If instead of z = (x – M) / s the formula is x = z(s) + M, what is the result?**

**9 How does standard normal distribution differ from other normal distributions?.**

**10 What is the similarity between the z test and one sample t test?**

**PSY 325 Week 2 Quiz Set 3**

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**Based on past experience, the probability that the sun will rise tomorrow is ________.**

**The standard error of the difference is a measure of pooled variance.**

**The z scores is a ratio of difference to variability (t).**

**How is the z-test different from z-score analysis?**

**What advantage does the one-sample t offer over the z-test?**

** In a distribution for which the mean is 25 and the standard deviation is 5, what percentage of all scores occur at 30 or below?**

**Which is true of a one-tailed test?**

**The distribution upon which the z-test is based has a mean of 1.0.**

**In a distribution for which the mean is 25 and the standard deviation is 5, what percentage of all scores occur between 20 and 30?**

**The z-test asks whether the population from which the sample was drawn has the same mean as the population to which it is compared.**