The difference between an observational study and an experiment is that?
in an observational...
Mathematics, 17.10.2019 06:00 rubyr9975
The difference between an observational study and an experiment is that?
in an observational study, only one group is studied, and in an experiment, two groups are studied.
in an observational study, the researchers do not control treatment, and in an experiment, they do.
in an experiment, cause-and-effect is analyzed, and in an observational study, it is not.
in an experiment, one group is studied over a short period of time, and in an observational study, the group is studied over a longer period of time.
Answers: 3
Mathematics, 22.06.2019 00:30
Will mark ! (10 points also! ) if x varies inversely with y and x =6 when equals y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15
Answers: 1
Mathematics, 22.06.2019 01:40
Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required
Answers: 1
Mathematics, 22.06.2019 04:00
Write a function rule for “the output is 5 less than the input.” let xx be the input and let yy be the output.
Answers: 3
Mathematics, 22.06.2019 04:30
In cents, what is the least total amount that cannot be obtained by using a combination of fewer than eight coins from a collection of pennies, nickels, dimes and quarters?
Answers: 2
History, 02.02.2020 23:46
Chemistry, 02.02.2020 23:46
Geography, 02.02.2020 23:46
SAT, 02.02.2020 23:46
Mathematics, 02.02.2020 23:46
Mathematics, 02.02.2020 23:46
History, 02.02.2020 23:46
History, 02.02.2020 23:46