A: the training that parents received
B: the age of the children
C: the books that were read
D: the number of the children
举一反三
- What is the difference between experimental group and control group? A: Treatment B: Effect C: Sampling error D: Observation time E: Location
- The biggest difference between Observational studies and Experimental<br/>research is( ) A: Intervention or treatment B: Prospective C: Random allocation D: Paralleled control group E: Blinding
- The difference in epidemiological experimental studies compared with prospective cohort studies is A: Research direction from outcome to causes B: Established a control group C: Interventions were implemented for the experimental group D: Can be used for cause inference E: Can be used to verify the cause of the hypothesis
- ________there a group of children near the lake this time yesterday? A: Were B: Are C: Will D: Was
- There was a (number) of children on the playground. A: class B: great crowd C: small group D: line
内容
- 0
The control group A: generally has higher income than the control group B: has no difference with control group C: is group of individules who are not subject to the intervention being studied D: is group of individules who are subject to the intervention being studied
- 1
Which group of children have a bias when choosing musical instruments A: Children who have private music tutors. B: Children who are 8 or older. C: Children who are between 5 and 7. D: Children who are well-educated.
- 2
One group of female rats of 180-200g weight was _____ to the<br/>experimental group, another group of females to the control group. A: accumulated B: allocated C: addicted D: attached
- 3
The treatment group A: is group of individules who are not subject to the intervention being studied B: is group of individules who are subject to the intervention being studied C: has no difference with control group D: generally has higher income than the control group
- 4
The relationship between parents and children。