The following table shows the monthly seasonally adjusted U.S. civilian unemployment rate for some months from January 2016 until December 2017. Complete parts a through d below.

The following table shows the monthly seasonally adjusted U5. civilian unemployment rate for some months from Januaryr 2016 until December 201?. Complete pans a through :1 below. 43 43 53 4.? 43 43 53 43 4.6 4} 43 Q 4} 45 4A 4.3 43 43 4A 42 4.1 41 41 a. Calculate the mean. The mean is . (Round to two decimal places as needed)