91影视

Data is provided on women鈥檚 median earnings as a percentage of men鈥檚 median earnings starting from the year 1990.

71.6 69.9 70.8 71.5 72.0 71.4 73.8 74.2 73.2 72.3 73.7 76.3 76.6 75.5 76.6 77.0 76.9 77.8 77.1 77.0 77.4 77.0

A time series plot is a graph that consists of observations plotted over a certain duration of time, say years.

Graphically, the years or months are marked on the horizontal axis, and the vertical axis represents the observations. The observations are plotted as points on the graph, and then all are joined to form a trend line.

The following table shows the median of women鈥檚 earnings from 1990:

Follow the below steps to sketch a time series plot:

• Draw a vertical axis starting from 69 with a one-unit increment.
• Plot years on the horizontal axis, starting from 1990 with a two-year increment.
• Mark the points on the graphs corresponding to the given year.
• Join the points with a line segment.
• Label the horizontal axis as 鈥淵ear鈥� and the vertical axis as 鈥淧ercentage of Women鈥檚 Earnings.鈥�

The following time-series graph is constructed:

The trend is an approximate increase or decrease throughout the period. By observing the plot, it can be seen that the women鈥檚 earnings have gradually increased from 1990 to 2011. There is an upward trend.

The median earning in terms of percentage with respect to men鈥檚 median earnings has increased. It implies that the gender gap in earning has lowered.

Thus, there is a positive effect that will help women achieve earnings equal to those of men.