by saspower | May 9, 2024 | Data Science Online Course
Cleaning time series data requires multiple stages. First, identify and manage missing values by either imputing or deleting them. Then, look for and address outliers that might bias the analysis. Next, guarantee homogeneity in time intervals by interpolating or...
by saspower | May 8, 2024 | SAS Online Course in India
The acronym SPSS stands for Statistical Package for the Social Sciences. It is a statistical analysis software programme used in a variety of domains such as social sciences, psychology, and market research. SPSS, established by IBM in 1968, offers a variety of tools...
by saspower | Apr 30, 2024 | SAS Online Course in India
“Data sampling” is the process of picking a subset of data from a broader population for study. The basic objective for sampling is to draw conclusions about the total population based on a more manageable and representative group. Time, expense, and...
by saspower | Apr 29, 2024 | SAS Online Course in India
In multiple linear regression analysis, the p-value for each independent variable is computed using a hypothesis test, most often the t-test. The formula requires dividing the coefficient estimate for each independent variable by its standard error. This ratio has a...
by saspower | Apr 27, 2024 | SAS Online Course in India
Residual plots in multiple linear regression models are used to validate model assumptions and detect possible issues such as heteroscedasticity or nonlinearity. These graphs show the discrepancies between observed and expected values (residues) vs independent...