Cisco Systems Total Revenues:

2017 - 48,005

2018 - 49,330

2019 - 51,904

2020- 49,301

2021 - 49,818

Perform the given tasks to prepare for the discussion:

• Prepare a time series plot of these data (years on the x axis, sales on the y axis).
• Use the first naive model you learned about in Week 1 to forecast data for year 6.
• Plot the actual data along with your forecast data.
• Based on your graph of the actual data, do you think there is a trend in the data? Is there any seasonal variation? Please explain your reasoning.