Internal validity is
a. the extent to which the results of an experiment can be attributed to the manipulation of the dependent variable, rather than to some confounding variable.
b. the extent to which the results of an experiment can be attributed to the manipulation of the independent variable, rather than to some confounding variable.
c. the extent to which the results of an experiment can be generalized.
d. both b and c.
Question 2
A researcher would like to examine the political attitudes for students at a local university. The researcher will evaluate a sample of 200 students but would like to be sure that the ages and genders of individuals in the sample accurately represent the ages and genders for the entire student body at the university. What would be the best sampling method for the researcher to use?
a. simple random sampling
b. stratified random sampling
c. proportionate stratified random sampling
d. systematic sampling
Sagittal section of upper respiratory system illustrating the internal anatomy of the nasal cavity,
Range of Motion of the Hip Joint, Internal and External Rotation
Benedict's test results
The immune response results from activation of the humoral and cell-mediated immune systems
Complement Activation and Results
Bacteria with Internal Membranes