Biostatistics Flashcards
Define statistics?
A scientific discipline covers data collection, data preparation, data
presentation, data summarization and information inference with data
analysis.
How many dimensions of statistics are there?
a. Two
b. Three
c. Four
d. Five
Three
Which of the following is NOT the dimensions of statistics?
a. Descriptive Statistics
b. Probability Theory
c. Differential Theory
d. Inferential Statistics
Differential Theory
What does Descriptive Statistics help in?
From data collection to data summarization.
Inferential Statistics helps in Data analysis and Modelling. True or false?
True
Probability Theory shows?
a. Probability distributions and Sampling distributions
b. From data collection to data summarization.
c. Data analysis and Modelling.
Probability distributions and Sampling distributions
_____________ is an applied field of statistics to the life and
health sciences
Biostatistics
__________ is the results of experiments and measurements
Data
What is the starting points of statistical process?
Data
Starting points of decision making process is?
Information
Information is the results of statistical process. True or false?
True
What are the two types of data?
Constant and variable
_______ and _______ are the types of Variables.
Qualitative and Quantitative
Which of the following is a Qualitative Variable?
a. Age
b. Weight
c. Length
d. Gender
Gender
Which of the following is NOT the Quantitative Variable?
a. Blood pressure
b. Blood group
c. Weight
d. Length
Blood group
Which scale does not come under Scale Hierarchy?
a. Nominal Scale
b. Ordinal Scale
c. Numerical Scale
d. Interval Scale
Numerical Scale
What does Ratio Scale shows?
numerical and absolute measures
Selection of Units is through __________ and _________
Census and sampling
Sampling Methods are divided into?
Probability Sampling and Non-Probability Sampling.
Primary Data Sources are the data that is collected by teachers. True or false?
False. Primary Data Sources are the data that is collected by researchers.
Data that is gathered from any data sources; governmental or private
institutions, libraries, previous studies, e-sources etc. is called?
Secondary Data Sources
First step of Data Preparation & Presentation is?
To organize data
What does Frequency Distribution shows?
A design showing frequencies of all observed outcomes.
What does Frequency Distribution shows?
A design showing frequencies of all observed outcomes.
Data is NOT illustrated by?
a. Drawings
b. Bar chart
c. Pie chart
d. Histograms
Drawings
Histogram is the illustration of frequencies based on finite intervals of a continuous random variable. True or false?
True
Name the four main measures of data summarization.
Central Tendency
Dispersion
Skewness
Kurtosis
Kurtosis is the measure of symmetry. True or false?
False. Kurtosis is the measure of tailedness.
Central Tendency is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness
measure of location
Dispersion is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness
measure of variability
Skewness is?
a. measure of variability
b. measure of symmetry
c. measure of location
d. measure of tailedness
measure of symmetry
Central Tendency is calculated by _________, _________ and __________
Mean, mode, and median
The value that repeats most often is called?
Mode
Mode is suitable for which type of data?
Suitable for categorical and especially nominal data.
The value that separate data as two equal parts is called?
Median
Median is suitable for which type of data?
Suitable for categorical and especially ordinal data.
___________ is the distance between maximum and minimum values.
Range
The formula for calculating range is?
Range= X max - X min
The square of standard deviation is called ___________
Variance
The ratio of standard deviation to arithmetic mean is called?
Coefficient of variation
Can we find ordinal scale from
nominal scale?
No. We can find nominal scale from
ordinal scale but NOT vice versa.
A Statistic is the information based on _______.
Data
Statistics is studied in two ways, name them?
Mathematical or applied.
Interval Scale shows?
a. unordered grouping
b. ordered grouping
c. numerical and relative measures
d. numerical and absolute measures
numerical and relative measures
Nominal Scale shows?
Unordered grouping
In Probability Sampling, units are selected based on the principle of randomization. True or false?
True
In Non-Probability Sampling, units are selected based on ___________
A subjective judgement.
Second step to Data Preparation & Presentation is?
To illustrate data
_________ is the number of occurrences of an outcome.
Frequency
A data with no any processing is called?
Raw data
