Answer:
The value of ΣXi will be:
\(\sum Xi=45\)
Step-by-step explanation:
We know that the summation sign represents the sum of two or more quantities.
Here we are asked to find ΣXi , this means that we have to sum up the given variable \(X_i's\)
We are given:
\(X_1=3\ ,\ X_2=12\ and\ X_3=30\)
Hence,
\(\sum X_i=X_1+X_2+X_3\)
i.e.
\(\sum X_i=3+12+30\\\\i.e.\\\\\sum X_i=45\)
Hence, the answer is: 45
