CUET Mathematics 2025 27 May Shift 1 PYQs

For the given values 27, 35, 42, 45, 51, 34, 43; the five yearly moving averages are:-

The values of '$a$' and '$b$' if the equation of straight line trend by least square method is given by $y = a + bx$ such that $\sum x = 0$, $\sum y = 84$, $\sum xy = 100$, $\sum x^2 = 70$ for 6 observation at are:

When data of the variable is collected at distinct time intervals for a specified period of time, it is called