चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) MD / MS / MDS प्रवेश परीक्षा तयारी
चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) – MD / MS / MDS प्रवेश परीक्षा
MECEE-PG – MD/MS/MDS · MECEE-PG (MD/MS/MDS)
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS/MDS प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
The statistical power of a study is equal to:
सही उत्तर: क) 1 − β
Power is the probability of detecting a true effect (correctly rejecting a false null hypothesis), i.e. 1 − β; it increases with sample size.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A type I (alpha) error occurs when the investigator:
सही उत्तर: ख) Rejects a null hypothesis that is actually true
Type I error is a false positive conclusion, its probability being the significance level α; type II error (β) is failing to detect a true difference.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Blood pressure is measured in the same patients before and after a drug. The appropriate test to compare the means is the:
सही उत्तर: क) Paired t-test
Measurements on the same individuals are dependent, so the paired t-test analyses the within-person differences.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
To compare the proportion of smokers between men and women (categorical data), the appropriate test is the:
सही उत्तर: ख) Chi-square test
The chi-square test compares proportions or frequencies of categorical variables between groups; t-tests and ANOVA compare means.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The mean weight of a group is 50 kg with a standard deviation of 5 kg. The coefficient of variation is:
सही उत्तर: घ) 10%
Coefficient of variation = SD ÷ mean × 100 = 5 ÷ 50 × 100 = 10%.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The standard deviation of haemoglobin in a sample of 100 people is 1.5 g/dL. The standard error of the mean is:
सही उत्तर: ग) 0.15 g/dL
SE = SD ÷ √n = 1.5 ÷ √100 = 1.5 ÷ 10 = 0.15 g/dL.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In a normal distribution, approximately what proportion of observations lie within ±1 standard deviation of the mean?
सही उत्तर: ख) 68%
About 68% of values lie within ±1 SD, 95% within ±1.96 (about 2) SD and 99.7% within ±3 SD.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Acute flaccid paralysis surveillance for polio eradication covers children below the age of:
सही उत्तर: क) 15 years
WHO recommends reporting and investigating all cases of AFP in children under 15 years of age (and any suspected polio at any age).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Herd immunity does NOT protect unvaccinated individuals against:
सही उत्तर: ग) Tetanus
Tetanus is acquired from spores in the environment, not from other people, so immunity in others gives no indirect protection.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The kappa statistic is used to measure:
सही उत्तर: घ) Agreement between observers beyond that expected by chance
Cohen's kappa quantifies inter- (or intra-) observer agreement for categorical ratings, correcting for chance agreement.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।