20th batch part 2

1. 8.Properties of a screening test includes
a) Sensitivity
b) Reliability
c) Specificity
d) Acceptability
e) Predictive value
9.Screening test
a) Is used as a diagnosting method
b) Reliable
c) is done in hospitals for patients
d)
e) Is cost effective
10 A researcher collects data on a patients Age,Sex,Ethnicity,Weight & the presence or absence of
metabolic syndrome, which of the following combinations are true,
a) Weight – continuous variable
b) Ethnicity – qualitative variable
c) Prescence or absence of metabolic syndrome – quantitative variable
d) Prescence or absence of metabolic syndrome – dependent variable
e) Prescence or absence of metabolic syndrome – Ordinal variable
11 These are the scores of few students recorded in the term test.They are 56.3 , 69.5 , 73.4 , 895 . Here
895 is recorded by mistake instead of 89.5.how this will affect the following ;
a) Mean increases
b) Mode increases
c) Median increases
d) Standard deviation increases
e) The range increases
12 Presence of outliers affects
a) variance
b) standard error
c) correlation coefficient
d) Standard deviation
e) Inter quartile range
13 - T/F regarding presentation of data graphically
a) A compound bar chart can present 2 categorical variables
b) Inter quartile range is the best measurement of spread in a skewed distribution
c) In a box and wisker plot the length of the box represents the range.
d)
e)
14 - Graph showing weight of students ( normal distribution graph of student weights.. the x axis weights
are 45 50 55 60 65.. the y axis is no. of students..)
a) 34% fall between 50 to 55kg
b) 84% fall below 60kg
c) 5% would fall below 45kg
d) median is 55
e) is a student of 62kg significantly different from the population
15) Research on Colonic cancer screening at an OPD of a hospital is to be conducted, sampling method
which could be used are

2. a) cluster sampling
b) stratified sampling
c) simple random sampling
d) multistage sampling
e) systematic sampling