Reference no: EM1395270
1. Is IQ test scores considered interval scale?
2. What type of research design is the strongest when I what to adopt a new educational program? Using a pre-test and post-test with control group, the previous method but without the control group, or comparing the performance of two groups of the students giving one the new program and one the old.
3. When a scatter diagrams does not meet the assumptions of Pearson's r? In curve scatter pilot or random pilot.
4. We could make Type II error if the sample size is very large or very small?
5. If the correlation coefficient of two variables = 1.31, is there a relation or an error?
6. Qualitative "researchers collect data through focused interviews, ethnography, case studies and the human as the instrument" is it true?
7.The characteristic of case studies is that they are not subject to prejudice, do not solve problems, have their greatest advantage in their depth, or their major advantage of producing valid generalizations? I'm confuse, which one is true?
8. When a test proved to be very consistent and closely related to the measure of another test, in this case can I say this test is valid and reliable?
9. Is this accurate? "Qualitative inquiry states that human behavior is bound to the context of the setting"?
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Determination-test for correlation coefficient
: What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food?
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Mean age of the population
: Can we conclude that the mean age of the population from which the sample may be presumed to have been drawn is less than 60 years? Let α = .05
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Mean systolic blood pressure for population african-american
: We wish to know if, on the basis of these data, we may conclude that the mean systolic blood pressure for a population of African-American men is greater than 140.
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Computing coefficient of determination
: In a regression analysis, the sum of the squared deviations between y and y-bar is SST = 200.0. If the sum of the squared deviations about the regression line is SSE + 40.0, what is the coefficient of determination?
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Statistical concepts clarification
: What type of research design is the strongest when I what to adopt a new educational program? Using a pre-test and post-test with control group, the previous method but without the control group.
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Drivers in the sample regularly wear a seatbelt
: Between 180 and 230 (inclusive) of the drivers in the sample regularly wear a seatbelt? Hint: Use the BINOMDIST function in Excel.
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Determining possible confounds
: A psychology professor is interested in whether implementing weekly quizzes improves student learning. She decides to use the weekly quizzes in one section of her introductory psychology class and not to use them in another section of the same cou..
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Describe why biodiversity is important to ecosystem health
: Describe why biodiversity is important to ecosystem health, even in an agricultural setting where most often farmers are paid for a single, pure product like wheat or corn.
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In what means usn and usmc fought pacific war
: Explain how and in what means did USN and USMC fight Pacific War? What battles early in campaign were very Mahanian and why? Explain was this a good strategy?
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