Descriptive statistics and interpretation | Business & Finance homework help
For skewed or non-normally distributed data use the median and interquartile range.
(b) For normally distributed data, determine the mean and standard deviation by constructing a histogram with equally spaced intervals of similar widths that cover the entire range of the dataset. Alternatively, if skewness is present in the data, plot a kernel density chart to visualize it more accurately.
(c) Bar charts are used to display categorical variables by plotting separate bars for each category along with its corresponding frequency/percentage. The categories should be sorted according to their frequencies (descending order is typically preferred).
(d) Scatter plots are used to show relationships between two numeric variables. The x-axis represents one variable while y-axis corresponds to another variable which can then be compared against each other for any correlation or association trends present in the dataset.