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Biostatistics
Biostatistics
19 terms
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1
Graphs are prepared for only
All the above
Nominal data
Ordinal data
Continuous data
2
Gender is a type of
Independent data
Nominal data
Ordinal data
Dependent data
3
How many types of variables in research
One
Two
Three
Four
4
Which of the following is not a non probability sampling?
Quota sampling
Convenience sampling
Cluster random sampling
Snowball sampling
5
Non-parametric Kruskal ANOVA is used to test significance between
Ordinal data for two groups
Continuous data for more than two groups
Ordinal data for more than two groups
Nominal data for two groups
6
The formula i.e. [Z
2
S
2
] / d
2
is used for calculation of sample size, when
mean as parameter in descritptive study
for proportion as parameter in comparative study
proportion as parameter in descriptive study
for mean as parameter in comparative study
7
If sample size is 19, then the median is
None
First value
Middle value
Last value
8
Paired / dependent t-test will be used to test
Both independent and dependent samples
Dependent samples
None
Independent samples
9
If p value is greater than 0.05 (i.e. p>0.05), it means that
Significance at 5% level
Null hypothesis is rejected
Not significance at 5% level
Alternative hypothesis is rejected
10
If 3 rows and 3 columns, what is the degree of freedom in chi-square test
5
4
9
6
11
When correlation coefficient is said to be positive and linear, when
r= 0.6547
r= -1
r= +1
-r= 0.6547
12
Mann-Whitney U test is equivalent to
Two independent samples t test
Two dependent samples t test
Chi-square test
One way ANOVA
13
When each member of a population has an equally likely chance of being selected, this is called
Simple random sampling
Non-random sampling
Cluster sampling
Judgement sampling
14
Type I error means
Reject alternative hypothesis, when it is true
Reject null hypothesis, when it is true
Reject null accepted, when it is false
Reject null hypothesis, when it is false
15
Statistics means
Collection and presentation of data
Summarization of data
Analysis and interpretations of set of data
All the above
16
The cause and effect relationships between two variables will be performed by
Regression analysis
Correlation analysis
All
Comparative analysis
17
Bond strength (in kgs) is a
Ordinal characetr
Categorical character
Qualitative character
Quantitative character
18
Summery statistics for qualitative data
Quantitative data
None of the above
Qualitative data
Both qualitative and quantitative data
19
Diagrams/charts are prepared for only
Quantitative data
None of the above
. Both qualitative and quantitative data
Qualitative data