Consider the following time series data:$4.$Month$23$Value$251220456712192314($a$)$ Compute MSE using the most recent value as the forecast for the next period.If required, round your answer to one decimal place$\mathrm{.}69\mathrm{.}74$What is the forecast for month $8?$If required, round your answer to one decimal place. Do not round intermediate calculation$\mathrm{.}14($b$)$ Compute MSE using the average of all the data available as the forecast for the next period.If required, round your answer to one decimal place. Do not round intermediate calculation$\mathrm{.}41$What is the forecast for month $8?$If required, round your answer to one decimal place$\mathrm{.}17\mathrm{.}9($c$)$Which method appears to provide the better forecast?