Question

The customer feedback rating of 2 regions:
where,
y: NPS
x: Age of people

The y-intercept of the equation representing average of both surveys is

• A. 98
• B. 196
• C. 48
• D. 61

Answer 1

The correct option is A 98

Given: Data collected from the suverys

Average of regions 1 & 2 is:
y = $\frac{(-\frac{2}{7}\text{x}+122+\frac{6}{7}\text{x}+74)}{2}$
= $\frac{\frac{4}{7}\text{x}+196}{2}$
= $\frac{2}{7}\text{x}+98$

$\because$ Y- intercept of equation
y = mx + c is 'c'.

$\therefore$ Y- intercept of
y = $\frac{2}{7}$x + 98 is 98.