ideally, the only source of variability in a study should be between the participants. true or...
ideally, the only source of variability in a study
should be between the participants.
true or false
Homework Answers
Answer is TRUE
● One possible source of variability is called the systematic
variance that results from the treatment effect. This is the
variability that we hypothesized would occur as a result of
our
manipulation of the independent variable (level of TV violence).
Systematic variance contributes to and
helps explain the difference or variability between participant
scores in the two groups, and therefore the
difference between the two group means.
Add Answer to:
ideally, the only source of variability in a study
should be between the participants.
true or...
Failure of the student participants to follow the study protocol exactly as required makes the compared...
Failure of the student participants to follow the study protocol exactly as required makes the compared groups more similar, which reduces the ability of the investigator to detect a difference between the groups, a) True b) False
A loss of study participants to follow-up that are different than those not lost to follow-up...
A loss of study participants to follow-up that are different than those not lost to follow-up is an example of information bias. Group of answer choices True False Cohort studies are attractive when the period between exposure and disease are short. Group of answer choices True False Because cohort studies are conducted over long periods of time and can directly measure incidence, cohort studies do not require large study populations. Group of answer choices True False
l (b) Statistical studies are not concerned with understanding the sources of variability in data, only...
l
(b) Statistical studies are not concerned with understanding the sources of variability in data, only with describing the variability in the data. Choose the correct answer below. research. A. False. Statistical studies are concerned with both describing the variability in the data and understanding the sources of variability in data. Understanding the sources allows researchers to control it and reach better conclusions, B. True Statistical studies are not concerned with understanding the sources of variability in data, only with...
Ideally, children should only experience ______medical examination when it comes to sexual abuse examinations.
Ideally, children should only experience ______medical examination when it comes to sexual abuse examinations.
1. A population estimate would involve inferential statistics. True False 2. "Participants" and "sample" mean basically...
1. A population estimate would involve inferential statistics. True False 2. "Participants" and "sample" mean basically the same thing. True False 3. A correlational study would be required if you were working with a very small sample. True False
True or False: Portfolio diversification reduces the variability of the returns on an individual stock.
True or False: Portfolio diversification reduces the variability of the returns on an individual stock.
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance;...
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance; error variance error variance ; total variance random error; a true effect (if one exists) both a true effect (if one exists) and random error; only random error just a true effect (if one exists); random error Rejecting the null hypothesis with the overall or omnibus One-way Analysis of Variance indicates that the: mean of one sample differs significantly from the mean of at...
True or False: Evaluation of evidence should be solely based upon study design.
True or False: Evaluation of evidence should be solely based upon study design.
4. False or True: The only study for which a sample size, n, may be calculated...
4. False or True: The only study for which a sample size, n, may be calculated is a study that entails the calculation of a confidence interval for the population mean, u.
6. A case-control study of 1700 participants looked at the association between Tamoxifen and uterine cancer....
6. A case-control study of 1700 participants looked at the association between Tamoxifen and uterine cancer. The study included 689 cases. There were 139 cases and 58 controls using Tamoxifen. Fill in the 2x2 table. Calculate and interpret the odds ratio.
l
(b) Statistical studies are not concerned with understanding the sources of variability in data, only with describing the variability in the data. Choose the correct answer below. research. A. False. Statistical studies are concerned with both describing the variability in the data and understanding the sources of variability in data. Understanding the sources allows researchers to control it and reach better conclusions, B. True Statistical studies are not concerned with understanding the sources of variability in data, only with...
4. False or True: The only study for which a sample size, n, may be calculated is a study that entails the calculation of a confidence interval for the population mean, u.
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