Homework Answers
Bias is defined as "any systematic error in the design, conduct or analysis of study that results in mistaken estimate of an exposure effect on this risk of disease
There are 3 source of bias
1. Systemic error
2. Random error
3. Confounding
Note: Healthy work effects it’s not source of bias it doesn’t effect of health care and it may not cause any partiality.
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HELP ME PLEASE DQuestion 1 1 pts Which of the following is NOT a source of bias? O A. Random error O B. Confounding ° C....
PLEASE HELP ME ANSWER THESE QUESTIONS! Question 2 Validity of a study depends on systematic error. O A. True B. False Q...
PLEASE HELP ME ANSWER THESE QUESTIONS!
Question 2 Validity of a study depends on systematic error. O A. True B. False Question 3 1 pt A study found that the effect of binge drinking on health was shown to vary by gender. This is an example of 0 external validity O B. confounding. 0 C, effect modification. D. internal validity MacBook Ai
Which of the following is NOT a way to reduce random error? Increase sample size Change...
Which of the following is NOT a way to reduce random error? Increase sample size Change study design Randomization Improve instrumentation Ensure representativeness True/False: Random errors are more serious for the validity of a study than systematic errors. A group of women with a family history of breast cancer enroll themselves into a study that aims to reduce incidence of breast cancer. This is an example of what type of bias? Surveillance bias Nonresponse bias Recall bias Prevarication bias Misclassification...
Which of the following indicate bias in an epidemiological study? A. Systematic error in collection of...
Which of the following indicate bias in an epidemiological study? A. Systematic error in collection of data B. Artificial increase or decrease in the number of participants present in any cell of the 2x2 table C. The researcher has a monetary interest in the outcome of the study D. Both A and B
2. Which of the following statements is TRUE (1 mark)? a) Selection bias can be reduced...
2. Which of the following statements is TRUE (1 mark)? a) Selection bias can be reduced by increasing sample size. b) Loss to follow-up in a cohort study can bias findings either towards the null (reducing the magnitude of the true association) or the opposite (over-estimating the magnitude of the true association). c) Systematic error can be reduced by taking repeated measurements. d) Non-differential misclassification of exposure or outcome usually biases study findings away from the null (towards finding an...
please slove both O False DQuestion 7 1 pts An endothermic reaction can be spontaneous. O...
please slove both
O False DQuestion 7 1 pts An endothermic reaction can be spontaneous. O True O False D Question 8 1 pts Consider liquid water boiling at 1 atm of pressure. Liquid water and water vapor are at at 100°C. O True ○ False 1 pts Question 9
1-The answer is true or false a-Random errors arise from both measurement errors and sampling variation....
1-The answer is true or false a-Random errors arise from both measurement errors and sampling variation. True False b-Sampling variability stems from inaccuracies in assessing the exposure and disease occurrence. True False c-Just like bias and confounding, random errors are considered systematic errors. True False d- In addition to the p-value, the confidence interval is another method for estimating the amount of random error in epidemiological studies. True False
1 pts DQuestion 3 Which of the following is the greatest contributor to the resonance hybrid...
1 pts DQuestion 3 Which of the following is the greatest contributor to the resonance hybrid for chlorite? 1- Cl: :O O: 1- Cl: :O 1- Cl: O: 1- CI :O O:
Easy! Help quickly ! DQuestion 5 20 pts Which one of the following statements is correct?...
Easy! Help quickly !
DQuestion 5 20 pts Which one of the following statements is correct? O If the velocity of a particle is zero, then its acceleration must be zero as well. O For a particle moving along a horizontal straight line, its speed must be zero as it reaches the right most O For a particle moving along a horizontal straight line, its acceleration must be zero as it reaches the right point most point. None of the...
DQuestion 1 1 pts Is the following statement true or false? 10 5 10 10 C...
DQuestion 1 1 pts Is the following statement true or false? 10 5 10 10 C True False D, Question 2 1 pts s the following statement sruc or fase?
DQuestion 24 1 pts 24. Which of the following equations is not balanced? a. 4Al +302...
DQuestion 24 1 pts 24. Which of the following equations is not balanced? a. 4Al +302 2AI2O3 b. C2H&t 02 2002+ 3H20 c. 2KCIO3-, 2KCİ +02 e. Pa+ 502 P491
PLEASE HELP ME ANSWER THESE QUESTIONS!
Question 2 Validity of a study depends on systematic error. O A. True B. False Question 3 1 pt A study found that the effect of binge drinking on health was shown to vary by gender. This is an example of 0 external validity O B. confounding. 0 C, effect modification. D. internal validity MacBook Ai
please slove both
O False DQuestion 7 1 pts An endothermic reaction can be spontaneous. O True O False D Question 8 1 pts Consider liquid water boiling at 1 atm of pressure. Liquid water and water vapor are at at 100°C. O True ○ False 1 pts Question 9
1 pts DQuestion 3 Which of the following is the greatest contributor to the resonance hybrid for chlorite? 1- Cl: :O O: 1- Cl: :O 1- Cl: O: 1- CI :O O:
Easy! Help quickly !
DQuestion 5 20 pts Which one of the following statements is correct? O If the velocity of a particle is zero, then its acceleration must be zero as well. O For a particle moving along a horizontal straight line, its speed must be zero as it reaches the right most O For a particle moving along a horizontal straight line, its acceleration must be zero as it reaches the right point most point. None of the...
DQuestion 1 1 pts Is the following statement true or false? 10 5 10 10 C True False D, Question 2 1 pts s the following statement sruc or fase?
DQuestion 24 1 pts 24. Which of the following equations is not balanced? a. 4Al +302 2AI2O3 b. C2H&t 02 2002+ 3H20 c. 2KCIO3-, 2KCİ +02 e. Pa+ 502 P491
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