If for the following data:

Year ($x_i$)	2010	2011	2012	2013	2014	2015	2016
Sales (in ₹ crores) ($y_i$)	6	8	9	11	13	17	20

If the equation of the straight line trend is $y=a+b(x_i-2013)$, then the trend value for the year 2018 is

In the month of January, the number of cases diagnosed of influenza epidemic are given in the following table

The 3-day moving averages are:

If $(t_1, y_1), (t_2, y_2), (t_3, y_3), ..., (t_n, y_n)$ denote the time series and $y_t$ are the trend values of the variable y, then $\sum(y - y_t)$, the sum of the deviations of y from their corresponding trend value is equal to:

If $(t_1, y_1)$, $(t_2, y_2)$,......,$(t_n, y_n)$ denote the time series and $y_t$ are the trend values of the variables $y$, then

Match List-I with List-II

Choose the correct answer from the options given below:

Which of the following statement(s) mentioned below do/does not specify the concept of time series analysis:-

A. Time series analysis comprises methods for analysing time series data in order to extract meaningful statistics and other characteristics of the data.

B. Time series analysis provides good forecasts or predictions of further values of the time series.

C. The time series analysis does not derive conclusions after arranging the time series in a systematic manner.

D. The measurement analysis and study of components of time series is called time series analysis.

Choose the correct answer from the options given below:

For the given 9 values, 4,5,5,6,7,8,9,8,10, the three years moving averages are