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Q4 REMEDIATION ACTIVITY #3

Quiz by JONALD ROSARIO

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15 questions
Show answers
  • Q1
    What is the formula for the population mean (μ)?
    μ=(∑▒X)^2/N
    μ=(∑▒X)/N
    μ=(∑▒X)/(n-1)
    μ=(∑▒X)/(n-1)^2
    30s
  • Q2
    What symbol represents the population variance?
    μ
    s^2
    S
    σ^2
    30s
  • Q3
    What does the population variance measure?
    The highest and lowest data values
    The average squared deviation from the mean
    The total sum of data values
    The most frequently occurring value
    30s
  • Q4
    Why is the variance always non-negative?
    Because variance is always zero
    Because squared deviations from the mean cannot be negative
    Because variance is the same as the mean
    Because variance measures the smallest data value
    30s
  • Q5
    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?
    ₱10,000
    ₱2,000
    ₱2,449.49
    ₱6,000
    30s
  • Q6
    A population dataset has values: 4, 6, 8, and 10. What is the population mean?
    9
    7
    8
    6
    30s
  • Q7
    If a population has a mean of 50 and variance of 25, which statement is true?
    The mean must be recalculated
    The data follows a uniform distribution
    The standard deviation is 5
    Most data points are exactly 50
    30s
  • Q8
    Which scenario would likely have the highest variance?
    Exam scores with little difference among students
    The heights of professional basketball players
    The ages of students in a single classroom
    The weights of identical manufactured bolts
    30s
  • Q9
    What is the formula for population variance σ²?
    σ² = (∑X)/N
    σ² = (∑(X - μ)²)/N²
    σ² = (∑(X - μ)²)/N
    σ² = (∑(X - μ)²)/(n-1)
    30s
  • Q10
    If all values in a population dataset are the same, what is the variance?
    Zero
    One
    Undefined
    Equal to the mean
    30s
  • Q11
    30s
  • Q12
    30s
  • Q13
    30s
  • Q14
    30s
  • Q15
    30s

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