For each of the time series, construct a line chart of the data and identify the characteristics of the time series $($that is$,$ random, stationary, trend, seasonal, or cyclical$).$

a$.$ Click here to view the data for the closing stock prices.

b$.$ Click here to view the data for the unemployment rates.

c$.$ Click here to view the data for the new car sales.

d$.$ Click here to view the data for the housing starts.