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Mcqs MBBS Exams India
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Home >> Preventive & Social Medicine >> Biostatistics >> Mcqs Page 2
(Single Best Answer) Question 11: Mean and standard deviation can be worked out only if data is on ?
A) Interval/Ratio Scale
B) Dichotomous Scale
C) Nominal Scale
D) Ordinal Scale
Answer (Select an option above to get the answer):
(Single Best Answer) Question 12: Mean hemoglobin of a sample of 100 pregnant women was found to be 10 mg% with a standard deviation of 1.0mg%. The standard error of the estimate would be ?
A) 0.01
B) 0.1
C) 1.0
D) 10.0
Answer (Select an option above to get the answer):
(Single Best Answer) Question 13: If we reject Null Hypothesis, when actually it is true, it is known as ?
A) Type I error
B) Type II error
C) Power
D) Specificity
Answer (Select an option above to get the answer):
(Single Best Answer) Question 14: Which one of the following relationships shown between different parameters of a performance of a test, is correct ?
A) Sensitivity = 1 - specificity
B) Positive Predictive Value = 1 - negative predictive value
C) Sensitivity is inversely proportional to Specificity
D) Sensitivity = 1 - Positive predictive value
Answer (Select an option above to get the answer):