Please help In your summary tab for both the columns a Expla

Please help.

In your summary tab, for both the columns a. Explain if the data fits a trend in two or three lines. Is it random? And Why? b. Summarize the behavior and the random variables as suggested by the analysis you performed above. Use the plots as a reference.

Thank You!

Solution

a)

The scatter plot of the number of cars arriving at traffic light does not show any trend as maximum of the values lie between 5 and 10 all the times and there are several bumps in the scatter plot.

For the Tesla motor stock price, we can say that there is a negative trend as it can be seen that the value of the stock price decreases over time most of the times. However it increses in some intervals. As it is a stock price data, the increase is due to seasonality of the time series data.

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b)

Histogram of the number of cars arriving at the traffic light shows that the distribution is approximately normal. Because the data is almost symmetric about the central value. And the bell shape is clearly visible as the frequency decreases on both the sides of the mean.

The histogram of the Tesla motor stock price shows that the data is randomly distributed in different range. There is no particular distribution for it. However maximum data lies on the right hand side of the center which makes it left skewed.