The repeated-measures analysis of variance statistic is a parametric test that allows researchers to determine whether the means of O two or more measures from different people are similar or different O three or more measures from the same person are similar or different O two measures from the same person are similar or different O three or more measures from different people are similar or different
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- One sample T test is used to determine whether __.1. two means from two independent groups differs significantly2. mean of the studied variable from selected sample is equal to standard value or the hypothesized value3. two variances from two independent groups differs significantly4. changes of mean in one independent group differs significantly before and aftersuppose the number of off springs a female eagle raises during its lifetime has a disturibution mean 14 and variance 4.7 in an area, 45 rescued and cured female eagles are set free. if these eagles are assumed to be independent (no lack of male partners and food resources) the total number of off springs produced by these eagles can be assumed to have a normal distirubition with mean ...... and variance .... what will the values of mean and variance ?If between-groups variance is small, then we have not observed experimenter effects. an effect of the dependent variable. enough samples. an effect of the independent variable.
- A clinical trial for a psychological therapy for trauma takes 37 women and gives them one treatment for trauma and then, a year later, gives them a different treatment. The measure used to indicate success is a Likert scale where 5 means 'l found the treatment very helpful' and 1 means 'l didn't find it helpful at all. The lead researcher gathers the data and she finds a very high variance of scores across the women in each treatment, and considers giving up the analysis. She plans to do a difference in means analysis with unequal variances (she tested and found the variances were unequal). She asks for your advice: a. She is being too hasty because she is using the wrong technique. This is a paired sample and when she takes the difference in the Likert scale for each subject across the two treatments the variance of the remaining lifferences might be so low that she can detect which treatment is statistically better b. She cannot give different treatments to the same people - it…An achievement test is normed so that the average is 200 and the variance is 225. A group of 9 students are tested for their level of achievement and have a mean score of 209. Should be consider this score unusual? What is the value of the test statistic?A researcher is using a repeated-measures study to evaluate the difference between two treatments. If the difference between the treatments is consistent from one participant to another, then the data should produce a ____. Group of answer choices small variance for the difference scores and a small standard error small variance for the difference scores and a large standard error large variance for the difference scores and a small standard error large variance for the difference scores and a large standard error
- Find any news article from the internet that discusses research comparing three or more independent groups on one variable. In other words, find an article that discusses information that may possibly have been obtained based on Analysis of Variance (ANOVA). The article does not have to state that ANOVA was used, but to demonstrate your understanding of this concept, the article must be about some comparison between three or more independent groups, which is the basis of the ANOVA concept. For this discussion, summarize the article by briefly mentioning what groups were compared and on what variable. Then, write about your own perspective on the issue (e.g., were the results what you would expect, does this bring to mind any personal experiences, etc.). The first section must be at least 100 words.Find any news article from the internet that discusses research comparing three or more independent groups on one variable. In other words, find an article that discusses information that may possibly have been obtained based on Analysis of Variance (ANOVA). The article does not have to state that ANOVA was used, but to demonstrate your understanding of this concept, the article must be about some comparison between three or more independent groups, which is the basis of the ANOVA concept. For this discussion, summarize the article by briefly mentioning what groups were compared and on what variable. Then, write about your own perspective on the issue (e.g., were the results what you would expect, does this bring to mind any personal experiences, etc.).Which of these comparisons between an ANOVA and a t test is correct? An ANOVA can be used to compare three or more conditions,whereas a t test cannot A t test can be used to compare two conditions,whereas an ANOVA cannot An ANOVA examines whether mean differences exist between conditions, whereas a t test does not A t test provides more flexibility in research studies than an
- A social psychologist wants to know if people judge a person's attractiveness differently if they appear rich or poor. Two pictures were taken with the same model, one in expensive clothes standing next to a new sports car, and the other in old clothes standing next to an old hatchback car. In an online survey, participants were randomly divided so that they saw one of the two pictures and were asked to rate the model's attractiveness on a scale of 1 to 10. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test independent samples t-test ANOVAThe analysis in Table 10–12 is from a hypothetical study comparing performance of children with communication disorders, their chronological age-matched peers, and their communication age-matched peers. The study had two independent variables: a group variable that was nonexperimental and a method variable that was experimental. The information reported includes descriptive statistics for the three groups of children across the two methods. The inferential data analysis was a two-way analysis of variance (ANOVA) with group and method as the independent variables. First, examine the descriptive statistics. What do you think might have happened in this study? You might consider entering the means in a spreadsheet and generating a bar graph or line graph.The analysis of variance methodology will show that there really is a difference between the means of several groups when: the variance within groups is significantly larger than the variance between groups. the variance between groups is significantly larger than the variance within groups. the sum of squares within groups is large relative to the sum of squares total. the sample means across the treatment groups are identical and equal the grand mean.