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Q 1/15
Score 0
What is the formula for the population mean (μ)?
30
μ=(∑▒X)^2/N
μ=(∑▒X)/N
μ=(∑▒X)/(n-1)
μ=(∑▒X)/(n-1)^2
Q 2/15
Score 0
What symbol represents the population variance?
30
μ
s^2
S
σ^2
15 questions
Q.
What is the formula for the population mean (μ)?
1
30 sec
Q.
What symbol represents the population variance?
2
30 sec
Q.
What does the population variance measure?
3
30 sec
Q.
Why is the variance always non-negative?
4
30 sec
Q.
A company surveys all 500 employees about their monthly salary. The average salary is ₱25,000 with a variance of ₱6,000,000. What is the standard deviation?
5
30 sec
Q.
A population dataset has values: 4, 6, 8, and 10. What is the population mean?
6
30 sec
Q.
If a population has a mean of 50 and variance of 25, which statement is true?
7
30 sec
Q.
Which scenario would likely have the highest variance?
8
30 sec
Q.
What is the formula for population variance σ²?
9
30 sec
Q.
If all values in a population dataset are the same, what is the variance?
