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Committee Exam 4 > Biostatistics > Flashcards

Biostatistics Flashcards

1
Q

Define statistics?

A

A scientific discipline covers data collection, data preparation, data
presentation, data summarization and information inference with data
analysis.

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2
Q

How many dimensions of statistics are there?
a. Two
b. Three
c. Four
d. Five

A

Three

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3
Q

Which of the following is NOT the dimensions of statistics?
a. Descriptive Statistics
b. Probability Theory
c. Differential Theory
d. Inferential Statistics

A

Differential Theory

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4
Q

What does Descriptive Statistics help in?

A

From data collection to data summarization.

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5
Q

Inferential Statistics helps in Data analysis and Modelling. True or false?

A

True

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6
Q

Probability Theory shows?
a. Probability distributions and Sampling distributions
b. From data collection to data summarization.
c. Data analysis and Modelling.

A

Probability distributions and Sampling distributions

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7
Q

_____________ is an applied field of statistics to the life and
health sciences

A

Biostatistics

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8
Q

__________ is the results of experiments and measurements

A

Data

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9
Q

What is the starting points of statistical process?

A

Data

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10
Q

Starting points of decision making process is?

A

Information

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11
Q

Information is the results of statistical process. True or false?

A

True

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12
Q

What are the two types of data?

A

Constant and variable

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13
Q

_______ and _______ are the types of Variables.

A

Qualitative and Quantitative

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14
Q

Which of the following is a Qualitative Variable?
a. Age
b. Weight
c. Length
d. Gender

A

Gender

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15
Q

Which of the following is NOT the Quantitative Variable?
a. Blood pressure
b. Blood group
c. Weight
d. Length

A

Blood group

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16
Q

Which scale does not come under Scale Hierarchy?
a. Nominal Scale
b. Ordinal Scale
c. Numerical Scale
d. Interval Scale

A

Numerical Scale

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17
Q

What does Ratio Scale shows?

A

numerical and absolute measures

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18
Q

Selection of Units is through __________ and _________

A

Census and sampling

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19
Q

Sampling Methods are divided into?

A

Probability Sampling and Non-Probability Sampling.

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20
Q

Primary Data Sources are the data that is collected by teachers. True or false?

A

False. Primary Data Sources are the data that is collected by researchers.

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21
Q

Data that is gathered from any data sources; governmental or private
institutions, libraries, previous studies, e-sources etc. is called?

A

Secondary Data Sources

22
Q

First step of Data Preparation & Presentation is?

A

To organize data

23
Q

What does Frequency Distribution shows?

A

A design showing frequencies of all observed outcomes.

23
Q

What does Frequency Distribution shows?

A

A design showing frequencies of all observed outcomes.

24
Q

Data is NOT illustrated by?
a. Drawings
b. Bar chart
c. Pie chart
d. Histograms

A

Drawings

25
Q

Histogram is the illustration of frequencies based on finite intervals of a continuous random variable. True or false?

A

True

26
Q

Name the four main measures of data summarization.

A

Central Tendency
Dispersion
Skewness
Kurtosis

27
Q

Kurtosis is the measure of symmetry. True or false?

A

False. Kurtosis is the measure of tailedness.

28
Q

Central Tendency is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness

A

measure of location

29
Q

Dispersion is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness

A

measure of variability

30
Q

Skewness is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness

A

measure of symmetry

31
Q

Central Tendency is calculated by _________, _________ and __________

A

Mean, mode, and median

32
Q

The value that repeats most often is called?

A

Mode

33
Q

Mode is suitable for which type of data?

A

Suitable for categorical and especially nominal data.

34
Q

The value that separate data as two equal parts is called?

A

Median

35
Q

Median is suitable for which type of data?

A

Suitable for categorical and especially ordinal data.

36
Q

___________ is the distance between maximum and minimum values.

A

Range

37
Q

The formula for calculating range is?

A

Range= X max - X min

38
Q

The square of standard deviation is called ___________

A

Variance

39
Q

The ratio of standard deviation to arithmetic mean is called?

A

Coefficient of variation

40
Q

Can we find ordinal scale from
nominal scale?

A

No. We can find nominal scale from
ordinal scale but NOT vice versa.

41
Q

A Statistic is the information based on _______.

A

Data

42
Q

Statistics is studied in two ways, name them?

A

Mathematical or applied.

43
Q

Interval Scale shows?
a. unordered grouping
b. ordered grouping
c. numerical and relative measures
d. numerical and absolute measures

A

numerical and relative measures

44
Q

Nominal Scale shows?

A

Unordered grouping

45
Q

In Probability Sampling, units are selected based on the principle of randomization. True or false?

A

True

46
Q

In Non-Probability Sampling, units are selected based on ___________

A

A subjective judgement.

47
Q

Second step to Data Preparation & Presentation is?

A

To illustrate data

48
Q

_________ is the number of occurrences of an outcome.

A

Frequency

49
Q

A data with no any processing is called?

A

Raw data

Committee Exam 4 (35 decks)

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