Date: 19 / 03/ 2021
Topic: Two-Dimensional Data Analysis
Objective: Content Review Workshop using the R-Studio tool to reinforce knowledge.
Shared resources:
Syllabus
Book
Brief summary of what was exposed in class:
Difference between a histogram and a bar chart
The bar diagram is a way of representing graphically a set of data or values, and it is made up of rectangular bars of proportional lengths to the represented values, while the histogram is the graph of the representation of frequency distributions in which rectangles are used. within some coordinates.
Box-and-whisker plo
Box-whisker diagrams (boxplots or box and whiskers) are a visual presentation that describes several important characteristics at the same time, such as dispersion and symmetry.
For its realization, the three quartiles and the minimum and maximum values of the data are represented, on a rectangle, aligned horizontally or vertically.
A box-and-whisker plot is a convenient way to visually display groups of numerical data through their quartiles. The lines that run parallel to the boxes are known as "whiskers," and they are used to indicate variability outside the upper and lower quartiles.
What is variance?
Variance is a measure of dispersion that represents the variability of a data series with respect to its mean. Formally, it is calculated as the sum of the squared residuals divided by the total of observations. It can also be calculated as the squared standard deviation.
Mean, median and mode.
The mean (average) of a data set is found by adding all the numbers in the data set and then dividing by the number of values in the set. The median is the mean value when a data set is ordered from smallest to largest. The mode is the number that occurs most frequently in a data set.
He also taught us how to perform some exercises in the R-Studio application.
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