Category: Statistics
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Distributions, Variables, Relationship between Variables
Data Types : Quantitative (Discrete) – Numerical values for which math makes sense Categorical (Qualitative) – Records of several categories. It can be sorted according to category. For example, shoes in a cupboard can be sorted according to colour. Can be illustrated using Bar charts Relative frequencies Pie chart Nominal – In a data set males could…
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Basic Terms in Statistics (contd 2.) – Glossary
What is Statistics : science of drawing conclusions from data Types of Statistics Descriptive Vs Inferential Descriptive Statistics : Summarizing data with numbers Mean : Is simply the arithmetic average of a group of numbers. It is not a robust statistic. Sensitive to extreme values. Instead trimmed mean can be used
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Basic Terms in Statistics – Glossary
Statistic A statistic is a quantity that is calculated from a sample of data. It is used to give information about unknown values in the corresponding population. For example, the average of the data in a sample is used to give information about the overall average in the population from which that sample was drawn.…
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Steps of a Data Analysis
Summary : Define the question scientific or business question that you would like to answer with data Define the ideal data set is the data set that you would collect if time and money were no object.