Chat with AIExam 9: Using Statistics to Answer Questions
scenario
Nora would like to conduct an experiment to determine whether behavior modification techniques can help children eliminate bedwetting. She obtains a sample of children who wet the bed and randomly assigns half to the behavior modification therapy and half to a control group who receive no therapy. After six months, she measures how often children in each group wet the bed.
-In order to determine whether the therapy group is significantly different from the control group, Nora will have to conduct a
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VerifiedB
What is a pie chart? Under what circumstances do researchers use a pie chart? What is one limitation of a pie chart?
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Answered by Examlex AI CopilotA pie chart is a circular statistical graphic that is divided into slices to illustrate numerical proportions. Each slice represents a proportion of the whole, and the size of each slice is proportional to the quantity it represents.
Researchers use pie charts to visually represent the distribution of a categorical variable or to show the relative sizes of different categories within a dataset. They are commonly used to display data that can be divided into categories, such as market share, budget allocation, or demographic distribution.
One limitation of a pie chart is that it can be difficult to accurately compare the size of different slices, especially when there are many categories or when the differences between categories are small. Additionally, pie charts can become cluttered and difficult to read if there are too many categories or if the slices are too small. As a result, researchers may choose to use other types of charts, such as bar graphs or stacked bar charts, to better illustrate their data.
Which of the following graphs can be used interchangeably with a frequency polygon?
(38) VerifiedC
A __________ is a single number representing the degree of relation between two variables.
(35) Karen categorizes people in her sample as either male or female, which represents which scale of measurement?
(36) A _______ correlation means that there is no relationship between the variables.
(47) It is somewhat easier to find a significant result when using a one-tailed test rather than a two-tailed test because
(39) You are using a(n) _________ scale of measurement if events are assigned to categories.
(36) ACT scores are measured on an interval scale of measurement because
(40) The presence of a true zero point is characteristic of the ________ scale of measurement.
(40) What are the properties of the interval scale of measurement? Give an example.
(39) Which scale of measurement provides the greatest amount of information?
(34) Generally, the y axis should be about _________ as tall as the x axis is long.
(36) Ethan wants to determine the representative score in his distribution. Ethan will need to calculate
(42) Consider the following scores: 1, 2, 2, 3, 4, 12, 12. Why is the mode misleading in this situation?
(32) Read the following article and answer the questions that follow:
Ozkan, T., & Lajenen, T. (2005). Masculinity, femininity, and the Bem Sex Role Inventory in Turkey. Sex Roles, 52, 103-110.
-Is this a true experiment? Why or why not?
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