What exactly is data visualisation, and what are the many types?

by saspower | Mar 2, 2024 | SAS Online Course in India

Data visualisation is the process of visually portraying data in order to effectively communicate insights and trends. Examples of data visualisations include:Scatter plots show connections between two variables.Bar charts are used to compare categorical data.Line...

What are the advantages of eliminating outliers from a dataset.

by saspower | Feb 27, 2024 | SAS Online Course in India

Removing outliers from a dataset has various advantages. For starters, it improves the precision and reliability of statistical studies by eliminating the distortion created by extreme numbers. This produces more robust and reliable outcomes, which improves the...

What are some instances of trends and seasonal patterns in time series data?

by saspower | Feb 25, 2024 | SAS Online Course in India

Trends in time series data show long-term changes or patterns over time, such as increasing or decreasing values. Examples include population growth, stock market trends, or climate change. Seasonality refers to recurring patterns that follow a specific time frame,...

Which technique is commonly used for handling outliers in data?

by saspower | Feb 23, 2024 | SAS Online Course in India

One commonly used technique for handling outliers in data is trimming or winsorizing. Trimming involves removing a certain percentage of extreme values from the upper and lower tails of the dataset, while winsorizing replaces extreme values with less extreme values...

Which data set should I use to apply linear regression?

by saspower | Feb 21, 2024 | Data Science Online Course

Choosing a dataset for linear regression depends on your research question and the availability of relevant variables. Datasets with continuous dependent variables and numeric independent variables are ideal. Consider datasets like housing prices with predictors such...