In the earlier note, we have studied the quantitative approach to compare the variance of multiple variables using the Coefficient of Variance (CV). Moreover, in this note, we will compare variance using a graphical method called boxplot. It is also called a five-number summary of data. BoxPlot Box plot is a graph that summarizes the …
Descriptive Statistics – Variance of data – Boxplots Read More »
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In the earlier notes, we have considered two aspects of data (also called a variable) separately. The first one measures the central tendency of data, and the second one is variation in data. These are a crucial part of the information that is contained inside the data. In this note, we will learn how to use …
Descriptive Statistics – Variance of data – Coefficient of Variance Read More »
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To understand the difference between standard deviation and standard error, we will first understand the meaning of statistic & parameter in the area of descriptive statistics. Parameter It is a numerical description of a population characteristic. For example, the population mean is one of the characteristics of parameter, and the population mean is denoted by . …
What is the difference between standard deviation and standard error? Read More »
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There are few differences between variance and absolute mean deviation, but we will first understand each term. Variance Variance measures the variability or dispersion of data from the central tendency such as mean. Moreover, while seeing the variance, one could quickly tell about the spread of the data of a variable. And variance is calculated …
What is the difference between variance and absolute mean deviation? Read More »
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The information retrieval (IR) technique gives a set of documents based on the query. For example, when we do a google search, we supply a query string to the search engine, and then based on the search engine algorithm, it returns a set of web documents link to us. The mentioned example is one way …
What is the difference between information retrieval and information extraction? Read More »
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We have covered the measures of data variability based on the absolute deviation in the earlier note, where we measure the variation from any arbitrary value. We have also covered mean absolute deviation. Instead of measuring from an arbitrary value, it uses mean, median, or mode as a fixed value and measures the deviation. We …
Descriptive Statistics – Measures of variability based on squared deviation Read More »
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We have covered what variability is and how to measure variability using specific values or partitioning values in the earlier note. Moreover, in this note, we will start measuring variation or dispersion based on the deviation. Deviation based measures of variation We need a tool that can measure the deviation of every observation around any given …
Descriptive Statistics – Measures of Variability based on absolute deviation Read More »
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In this note series of descriptive statistics, we have introduced the concept of variability or dispersion and why it is essential to understand the behavior of data. Moreover, this note will go into the details of dispersion or variability based on the specific values or partitioning values. These are the few of the measures based …
Descriptive Statistics – Measures of Variability based on specific values Read More »
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This note will cover the Python Sets internals and data structure to understand various operations performed on the Sets with sufficient examples. As an expectation, after completing this note, anyone will be able to use Python Sets smoothly. Python Sets A set is a data structure that stores an unordered collection of items, and every …
Python Fundamentals – Sets Read More »
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In this note series, we have seen how to dig out the information from data. For example, to measure the central tendency of data, we can use any of the estimates such as mean, median, or mode based on the data. Measures of variation in Descriptive Statistics Measures of central tendency gives an idea about …
Descriptive Statistics – Measures of Variability Read More »
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