re concerned that random assignment von't create comparable groups, what lesign should they use? O Within groups O Independent groups O Matched groups

A type 1 error involves concluding that there is an effect when its just by chance alone, the null is actually true Group of answer choices True False

In a frequency distribution, categories should be mutually exclusive and exhaustive so that every case is classified ______.     A. in logically defensible groups       B. in only one category       C. in multiple categories           D. randomly

The 3 techniques for creating equivalent groups all have their own pros and cons. While all of them could increase the internal validity of an experiment, which weakens the external validity of an experiment? O A. Random selection O B. Random assignment C. Matching groups O D. Holding variables constant Reset Selection Previous Next Save W MAR étv 25 FII F12 80 888 D00 F4 F8 F9 F10 F3 F5 F6 % & * 5 6 8