What influence do outliers have on a dataset?

by saspower | Mar 13, 2024 | SAS Online Course in India

Outliers can have a major influence on a dataset by distorting statistical measurements like the mean and standard deviation, resulting in erroneous representations of central tendency and variability. They can also skew correlation and regression studies, reducing...

What are the practical uses of linear and logistic regression?

by saspower | Mar 3, 2024 | SAS Online Course in India

Linear regression is used in a variety of sectors, including economics (predicting sales based on advertising spend), finance (predicting stock prices), and healthcare (predicting patient recovery time using a variety of criteria). Logistic regression, on the other...

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...