Anesthesia Physics and Eq uipment made easy ! Statistics
Why statistics
Descriptive stats : Tables
Descriptive stats : Chart
Descriptive stats : Numeric summary values
Descriptive stats : Shapes
Getting the data :study design
Inferential stats: probability
Inferential stats: risks
Inferential stats: odds
Confidence intervals
Estimating difference between population parameters
Estimating ratio between population parameters
Testing hypothesis about differences between two population parameters
Testing hypothesis about ratio between two population parameters
Testing hypothesis about proportions between two population parameters (Chi squared test)
Measuring association
Measuring agreement
straight line beauty models :linear regression
curvy beauty models : logistic regression
measuring survival
systematic review meta analysis
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
Variable: Something whose value can vary. E.g. Pulse is a variable .Data: This is actual measured number . E.g. the data for the pulse of a patient can be 72, 68, 65, 77, etc
There are two types of variables: 1. Categorical 2. Metric
Categorical
Nominal: Values in arbitrary categories
Ordinal: Values in ordered categories
Metric:
Discrete : Integer values in a scale
Continuous: Continuous values
Nominal explained:
contingency table with blood groups
Nominal categorical variables : 1. do not have units of measurement 2. The categories are completely arbitrary . They cannot be arranged in a meaningful way.
Ordinal explained:
Ordinal categorical variables : 1. do not have units of measurement 2. The categories are NOT completely arbitrary . They CAN be arranged in a meaningful way.
Ordinal variables are not real numbers, so cannot apply arithmetic .
Not on a number line.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
We a t uses different colours to show the direct and speed of flow. This helps you to identify vessels.
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