[Solved] STA301 GDB 1 Fall 2021
STA301 GDB 1 Fall 2021 solution idea:
STA301 GDB SOLUTION FALL 2021
Last Date: 12 Dec 2021
Why do we need to compute the measure of dispersion (variance and standard deviation) even if we have computed the measure of central tendency (mean, median, and mode, etc.)?
Measures of central tendency are used to estimate “normal” values of a dataset, measures of dispersion are important for describing the spread of the data, or its variation around a central value. Two distinct samples may have the same mean or median, but completely different levels of variability or vice versa.
What is the difference between Pie Chart and Bar Chart? Why do we use them?
Pie charts show how much each category represents as a proportion of the whole by using a circular format with different sized slices for different percentages of the whole.
Bar graphs use a series of rectangular bars to show absolute value or proportions for each of the categories.