Which of the following must be found in order to observe an effect of the independent variable in an experiment? A. high between-group variance B. High error variance C. high standard deviations D. high group means 2. What kind of validity is threatened when we cannot generalize the results of the study? A. construct validity B. External validity C. Internal validity D. Statistical validity 3. Which confounding variable is most likely to occur when participants are selected because their pretest measures were abnormally high? A. testing B. regression to the mean C. selection D. attrition 4. In within-subjects designs, the unwanted effects due to the influence of one condition on the following conditions called... A. attrition effects B. carry-over effects C. positive practice effect D. negative practice effects
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To observe an effect of the independent variable in an experiment, you would need to find a high between-group variance. This is because the between-group variance measures the differences between different groups in an experiment, which is where you would expect Show more…
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If sample sizes are large, the observed value of t is generally: a. equal to the variance b. small c. equal to the mean difference d. large 2. Which of the following provides the best point-estimate of the population variance? a. The variance from the smaller of the two samples b. The variance from the larger of the two samples c. The pooled variance d. The variance whose absolute value is larger 3. What is the advantage of a two-sample study over a one-sample study? a. Two-sample studies usually cost less than one-sample studies. b. Two-sample studies are less likely to cause ethical concerns. c. Two-sample studies can test standard deviations in addition to means. d. Two-sample studies help control the effects of simultaneous events. 4. One advantage of the two-sample study over the one-sample study is that it helps control for the effect of: a. disproportionate means b. simultaneous events c. multiple dependent variables d. nonrandom sampling 5. In the two-sample test, the null hypothesis says that: a. the sample means are the same b. the population means are the same c. the samples are the same d. the populations are the same
Madhur L.
Assumptions for statistical procedures are about: A. inferences. B. populations. C. samples. D. hypotheses. 2. Which of these criteria for the RMSEA statistic is considered to indicate a good-fitting structural equation model? A. depends on df B. less than -2.58 or greater than +2.58 C. 95% or higher D. 0.05 or lower 3. In studies focused on mean differences, the standard error is: A. the standard deviation of a distribution of means. B. rejecting the null hypothesis when it really is true. C. calculated by summing the errors figured by subtracting sample means from the population variance. D. the typical "error term" used when calculating the estimated sample variance. 4. The design notation for a factorial design shows the number of ________ and the number of ________. A. participants; conditions B. dependent variables; levels of each independent variable C. independent variables; levels of each independent variable D. participants; independent variables 5. Each F-ratio represents: A. a comparison of main effects to interactions. B. a comparison of overall variance to between-groups variance. C. a comparison of overall variance to within-groups variance. D. a comparison of between-groups variance to within-groups variance. 6. Which of these skewness statistics suggests the least problem with the assumption of normality? A. 1 B. -0.3 C. 0.5 D. -2 7. Which of the following is most important to include when reporting your analyses? A. p values B. standardized coefficients C. effect sizes D. positive (non-null) results
1. This is used to draw generalizations, interpretations, or conclusions about the properties or characteristics of a large group of people, places, or things on the basis of the information obtained from a portion of a whole. Select one: a) Inferential Statistics b) Business Statistics c) Descriptive Statistics 2. In this type of skewness, the median is greater than the mean but less than the mode Select one: a) Negatively Skewed b) none of the above c) Positively Skewed d) normal curve 3. Identify the basic form of probability sampling Select one: a) simple random sampling b) accidental sampling c) convenience sampling d) Fundamental sampling 4. Supposing that there are 7 distinct chairs to be arranged in a round table. How many possible arrangements will there be? Select one: a) 5,040 b) 720 c) 24 d) 120 5. Classify: Data gathered from an experiment Select one: a) Secondary b) Primary 6. This is a type of sampling wherein groups are randomly chosen instead of individuals. Select one: a) multi-stage sampling b) Stratified Sampling c) cluster sampling d) Group sampling 7. Classify: Years of Experience Select one: a) Numerical b) Categorical
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