## Part -2 Biostatistics
and research methodology MCQ - b.pharma SEM 8

**for part 1** click here

51. The ratio between
experimental and observed results is represented by

a) theta value

** b) chi- square**

c) variance ratio

d) correlation

52. Chi-square test was
developed by

a) W. S. Gosset

b) Karl Pearson

** c) A. R. Fisher **

d) Pascal

53. Two variables deviate in
opposite directions is called

a) positive
correlation

b) ideal
correlation

** c) inverse correlation **

d) moderate positive

54. The fundamental statistical
indicators are

** a) Mean**

b) Median

c) Variance

d) Standard deviation

55. The average of a series of
numerical values is

**a) The sum of the values divided by their number**

b) Lower than the minimum
value in the series

c) Lower than the maximum value
in the series

d) An indicator of central
tendency for the values of the series

56. Standard deviation

**a) is the square root of variance**

b) is measured using the unit
of the variable

c) is measured using the
squared unit of the variable

d) has values generally
comparable with the average value

57. If the average of a series
of values is 10 and their variance is 4, then the coefficient of variation (=
ratio standard deviation / average) is

a)40%

**b)20% **

c)80%

d)10%

58. The median of a series of
numerical values is

a) Equal to the average

b) A graph or chart

**c) A number**

d) A frequency table

59. The median of a
series of numerical values is

** a) A value for which half of values are higher &
half of values are lower**

b) The value located exactly midway between the minimum and maximum of the series

c) The most commonly
encountered values among the series

d) A measure of the
eccentricity of the series

60. In a contingency table that
shows data from a clinical trial is good to have high values for

a) sick subjects, diagnosed as
negative

** b) sick subjects, diagnosed as positive**

c) healthy subjects, diagnosed
as negative

d) healthy subjects, diagnosed
as positive

61. A regression line is a
straight line which

**a) is located as close as possible to all the points of a scatter chart**

b) is defined by an
equation having 2 parameters: the slope and the intercept

c) provides an approximate
relation ship between the values of two parameters

d) is parallel to one of the
coordinate axes

62. Pearson correlation
coefficient, denoted by r, measures

a) The scattering
strength of data for a statistical series

b) The strength of the
correlation between the mean and median

**c) The strength of the correlation between two numerical parameters**

d) The tendency of
simultaneous increase or decrease, or inverse evolution, for two numerical

parameters

## Part -2 Biostatistics and research methodology MCQ - b.pharma SEM 8

63. The Student's t test is

**a) a parametric test**

b) a nonparametric test

c) a test for comparing
averages

d) a test for comparing
variances

64. Which of the following
tests are parametric test?

a) ANOVA

**b) Student **

c)Wilcoxon

d) Kruskal-Wallis

65. A subset of the population
selected to help make inferences on a population is called

**a) a population **

b) inferential statistics

c) a census

d) a sample

66. A set of all possible data
values for a subject under consideration is called

**a) descriptive statistics **

b) a sample

c) a population

d) statistics

67. The number of occurrences
of a data value is called

**a) the class limits **

b) the frequency

c) the cumulative
frequency

d) the relative frequency

68. A large collection of data
may be condensed by constructing

a) classes

b) a frequency polygon

c) class limits

**d) a frequency distribution**

69. What is the purpose of a
summary table?

a) This is the only way to
present categorical data in numerical form

b) To sum the values of
responses to a survey

c) To list data to create a bar
or pie chart

** d) To see differences between or among categories**

70. A graphical representation
of a frequency distribution is called a

a) stem and leaf plot

b) scatter diagram

c) time-series plot

**d) histogram**

71. The width of a class
interval in a frequency distribution will be approximately equal to the range
of the data divided by the

a) highest value in the data
set

b) lowest value in the data set

**c) number of class intervals **

d) average of the data set

72. The cumulative frequency
for a particular class is equal to 35. The cumulative frequency for the next
class will be ______

a) less than 35

b) equal to 65

**c) 35 plus **

d) 35 minus

73. The highest bar in a
histogram represents?

a) the class with the highest
cumulative frequency

b) the class with the lowest
frequency

**c) the class with the highest frequency**

d) the class with the lowest
relative frequency

74. Which of the following
would be most helpful in the construction of a pie chart?

a) cumulative percentages
b)frequency distribution

c) ogive

**d) relative frequencies**

75. The following numbers
represent exam scores in botany: 78, 93, 85, 8, 73, 96, 72, 86, 90, 85. If a
stem and leaf diagram is developed from this data, how many stems will be used?

**a) 3 **

b) 5

c) 10

d) 4

76. Can a frequency
distribution have overlapping classes?

a) sometimes

** b) no **

c) yes

d) all of the above

77. Which of the following is
not a measure of central tendency?

a) mode

** b) variability **

c) median

d) mean

78. Which of the following is
the crudest measure of dispersion?

** a) mean absolute deviation **

b) variance

c) mode

d) range

79. Second moment about mean is

a) SD

** b) variance**

c) coefficient of
variation

d) none

80. The most frequently
occurring value in a data set is called the

a) spread

**b) mode **

c) skewness

d)maximum value

81. Which of the following is
true for a positively skewed distribution?

a) mode=median=mean

b) mean<median<mode

**c) mode<median<mean**

d)median<mode<mean

82. If the number of values in
a data set is even, and the numbers are ordered, then

a) the median cannot be
found

b) the median is the average of
the two middle numbers

**c) the median, mode and mean are equal **

d)none

83. The coefficient of skewness
is always zero for_________ distribution

**a) symmetrical **

b) skewed

c)median

d) none

84. If the correlation
coefficient is zero, the slope of a linear regression line will be

a) positive

b)negative

c)positive or negative

**d) none**

85. Thin layer chromatography
is

a) partition
chromatography

b) electrical mobility of
ionic species

** c) adsorption chromatography **

d) one of the above

86. In gas chromatography, the
basis for separation of the components of the volatile material is the
difference in

a) partition coefficients

b) conductivity

**c) molecular weight **

d) molarity

87. Which section of a paired
samples t test output can be ignored?

a) regression

b) mean

c)median

**d) paired samples correlation**

88. A regression line is a
straight line which:

a) is located as close as
possible to all the points of a scatter chart

**b) is defined by an equation having 2 parameters: the slope and
the intercept**

c) provides an approximate
relationship between the values of two parameters

d) is parallel to one of the
coordinate axes

89. What is the alternative
name for a repeated measures t- test?

a) unrelated t-test

b) related t-test

**c) a paired samples t-test **

d) unpaired sample t-test

90. Conducting multiple t-
tests increases the likelihood of which of the following?

a) finding correct
conclusions

**b) type 1 error **

c) homogeneity

d) type II error

91. SPSS stands for

a) simple perfect squaredsquare

b) statistical product and
service solutions

**c) statistical package for social science**

d) software package for
statistical science

92. HPLC stands for

a) High pressure liquid
chromatography

**b) High performance liquid chromatography**

c) both (a) amd (b)

d) Highly placed liquid
chromatography

93. The eluent strength is a
measure of

**a) solvent absorption energy b)solvent adsorption energy**

c)solvent diffusivity

d) solvent mixing index

94. Which can be used as a
mobile phase in HPLC applications?

**a) any compound with solubility in liquid**

b) any compound with limited
solubility in liquid

c) any compound with
non-solubility in liquid

d) none

95. HPLC methods includes

a) liquid/liquid chromatography

b) liquid/solid chromatography

c) ion exchange and size
exclusion chromatography

**d) all of the above**

96. For a typical adsorbent
such as silica gel, the most popular pore diameters are

a) 10 and 50 A°

**b) 60 and 100 A° **

c) 100 and 150 A°

d) 150 and 200 A°

97. What is the possibility of
having 53 Thursdays in a non-leap year?

a) 6/7

**b) 1/7**

c) 1/365

d) 53/365

98. The collection of one or
more outcomes from an experiment is called

a) probability

**b) event **

c) random variable

d) Z-value

99. Which of the following is
not a condition of the binomial distribution?

a) only 2 possible outcomes

b)have constant probability of
success

**c) must have atleast 3 trials **

d) trials must be independent

100. When two coins are tossed
simultaneously, what are the chances of getting atleast one tail?

**a) 3/4 **

b) 1/5

c) 4/5

d) 1/4

**for part 1**click here

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