To replicate an experiment means to ( ).
A: use control groups and experimental groups
B: use statistics to determine the effect of chance
C: control for the effects of extraneous variables
D: repeat the experiment using either identical or improved research methods
A: use control groups and experimental groups
B: use statistics to determine the effect of chance
C: control for the effects of extraneous variables
D: repeat the experiment using either identical or improved research methods
举一反三
- In designing an experiment, blocking is used A: to reduce variation B: to control the level of the experiment C: as a first step in randomization D: None of the above
- When comparing the means of three groups and above in population, we use A: t-test B: ANOVA C: Chi-square D: Rank test
- Which of the following is NOT to explain the methods? A: What is the research design? B: What materials and techniques did the research use? C: What statistics did the research analyze? D: What procedures did the research follow?
- An<br/>F test for an analysis of variance (ANOVA) tells us () A: which<br/>of the pairs of treatment groups have means that are significantly<br/>different. B: whether<br/>the variances across the treatment groups are significantly<br/>different. C: whether<br/>there is evidence that at least two of the means across treatment<br/>groups are significantly different. D: whether<br/>the experiment was randomized.
- Intelligent control is a class of control techniques that use various AI computing approaches.