v1-Presentation - Biostatistics in Practice-pptx
                     Biostatistic
s in Practic
e
From Data Collection to Analysis
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What are 
Biostatistics?
Importance of Statistical Methods in Health
Biostatistics is the application of statistical 
methods to biological and health studies, playing a 
crucial role in experiment design, data collection, and 
analysis, guiding decisions in medical and public health 
fields.
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Measures of Central Tendency
These summarize data center: mean, median, 
mode.
Descriptive Measures of DispersionThese indicate data spread: range, variance, 
Statistics standard deviation.
Range of Data
Understanding Data Summary and It represents the difference between 
Dispersion maximum and minimum values.
Interquartile Range
This measures the middle 50% of data 
distribution.
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Inferential 
Statistics
Making Predictions from Sample Data
Inferential statistics allow researchers to predict 
outcomes for entire populations based on sample data. 
This method is vital for making informed decisions in 
healthcare, policy-making, and scientific research.
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Null Hypothesis
Assumes no effect or difference exists in data
Testing Alternative HypothesisIndicates that an effect or difference does 
Hypotheses exist
P-value
Understanding core principles of Probability that observed data occurred by 
statistical testing chance alone
Confidence Interval
Range within which the true effect likely lies
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