Question48:-In Correlation, the shape of the curve is
A:-Skewed towards right side
B:-Skewed towards left side
C:-Both of the above
D:-Dumbbell shaped
Correct Answer:- Option-D
Question49:-MeanA:-Positively skewed distribution
B:-Negatively skewed distribution
C:-Standard normal distribution
D:-None of the above
Correct Answer:- Option-B
Question50:-In a standard normal distribution, Mean +3 Standard Deviation which covers about 99% of data, the Z-score is
taken as
Al
B:-2
6:25
0:-3.5
Correct Answer:- Option-C
Question51:-Which among the following is NOT a feature of parametric tests
A:-Distribution is assumed to be normal
B:-Data is in Interval scale or Ratio scale
C:-Data set relationships are independent in nature
D:-The correlation test used in Spearman's cormrelation
Correct Answer:- Option-D
Question52:-Sensitivity of a biochemical test is
A:-The closeness with which measured values agree with true value
B:-The ability to identify correctly all those who have the disease
C:-The ability to identify comrectly all those who do not have the disease
D:-BothAand B
Correct Answer:- Option-B
Question53:-Reliability and repeatability can be measured by
A:-Correlation
B:-Regression
C:-Both of the above
D:-None of the above
Correct Answer:- Option-A
Question54:-Fluoride as an element was discovered by H.v. Churchill in the year
A:-1901
B:-1931
C:-1941
D:-1945
Correct Answer:- Option-B
Question55:-The Turku sugar study on diet and dental caries was conducted by
A:-Gustafsson et al in 1954
B:-Scheinin and Makinen in 1975
C:-Sullivan and Haris in 1963
D:-None of the above
Correct Answer:- Option-B
Question56:-In the Lactobacillus count test, which reading is inferred as moderate risk
A:-1000-5000
B:-5000-10000
C:-More than 10000
D:-More than 15000
Correct Answer:- Option-B
Question57:-The indicator dye used in Ora test is
A:-Diazoresorcinol
B:-Methylene blue
C:-Bromocresol green