Properties, Formula, Example Solved Problems | Data Science
Subject and UNIT: Foundation of Data Science: Unit III: Describing Relationships
The product moment correlation, r, summarizes the strength of association between two metric (interval or ratio scaled) variables, say X and Y.
Examples, Advantages, Disadvantage | Data Science
Subject and UNIT: Foundation of Data Science: Unit III: Describing Relationships
When two variables x and y have an association (or relationship), we say there exists a correlation between them.
Types, Coefficient, Properties, Example Solved Problems | Data Science
Subject and UNIT: Foundation of Data Science: Unit III: Describing Relationships
When one measurement is made on each observation, uni-variate analysis is applied.
Describing Data | Foundation of Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
Qualitative data provides information about the quality of an object or information which cannot be measured.
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
The normal distribution is a continuous probability distribution that is symmetrical on both sides of the mean, so the right side of the center is a mirror image of the left side.
Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
Variability refers to the divergence of data from its mean value and is commonly used in the statistical and financial sectors.
Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
Averages consist of numbers (or words) about which the data are, in some sense, centered.
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
It is a well known fact that statistics can be misleading. They are often used to prove a point and can easily be twisted in favour of that point.
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
There are a couple of graphs that are appropriate for qualitative data that has no natural ordering.
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
A histogram is a special kind of bar graph that applies to quantitative data (discrete or continuous).
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
Frequency distribution is a representation, either in a graphical or tabular format, that displays the number of observations within a given interval.
Describing Data | Data Science
Subject and UNIT: Foundation of Data Science: Unit II: Describing Data
Variable is a characteristic or property that can take on different values.