Question

the average of 5, 20, and -10 is 7. question 1 o true o false general math part 1 competency based - lesson 30 assessment - edcb ma008a

Explanation:

Step1: Recall average formula

The average (arithmetic - mean) of a set of numbers \(x_1,x_2,\cdots,x_n\) is \(\bar{x}=\frac{x_1 + x_2+\cdots+x_n}{n}\). Here \(n = 3\), \(x_1 = 5\), \(x_2=20\), \(x_3=- 10\).

Step2: Calculate the sum of the numbers

\(x_1 + x_2+x_3=5 + 20+( - 10)=5 + 20-10=15\).

Step3: Calculate the average

\(\bar{x}=\frac{15}{3}=5\).

Answer:

False