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WEEK 7 Assessment

Quiz by Rodel Avellano

Grade 11-12
Statistics and Probability
Philippines Curriculum: SHS Core Subjects (MELC)

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10 questions
Show answers
  • Q1
    It is the probability distribution used when the population variance is unknown and/or if the sample size is small.
    p-distribution
    t-distribution
    z-distribution
    chi-distribution
    60s
    M11/12SP-IIIg-2
  • Q2
    When do we consider that the sample size is small?
    when it is less than 30
    when it is greater that 25 but less than 40
    when it is between 20 to 40
    when it is only 1% of the total population
    60s
    M11/12SP-IIIg-2
  • Q3
    In Student's t-distribution, what is the sample size of the degree of freedom is 25?
    5
    24
    26
    25
    60s
    M11/12SP-IIIg-2
  • Q4
    When do we use the t-distribution instead of normal distribution?
    When the sample size is considered small
    If the population variance is known
    If the sample variance is unknown
    When the sample size is sufficiently large
    60s
    M11/12SP-IIIg-2
  • Q5
    In the estimation of a parameter using the t-distribution, is it possible to replace the population standard deviation by a sample standard deviation?
    No, because the given sample size is small
    Yes, because population standard deviation is equal to sample standard deviation when we are estimating parameters
    No, because population standard deviation and sample standard deviation differ by a significant amount
    Yes, because population standard is unknown and sample standard deviation is a good estimator of population standard deviation.
    60s
    M11/12SP-IIIg-2
  • Q6
    It is a value in the t-distribution that is less than the probability of the given percentage.
    t-value
    percentile
    right-tailed value
    degrees of freedom
    60s
    M11/12SP-IIIg-5
  • Q7
    If the area of the unshaded part of the t-distribution is 0.85, what is the area of the shaded region?
    0.85
    85%
    0.75
    0.15
    60s
    M11/12SP-IIIg-5
  • Q8
    What is needed in order to identify a percentile using the t-table?
    degrees of freedom and the given percentage
    degrees of freedom only
    degrees of freedom and the area to the left tail of the t-distribution
    degrees of freedom and the area to the right tail of the t-distribution
    60s
    M11/12SP-IIIg-5
  • Q9
    What is the 95th percentile of the t-distribution when the sample size is 23?
    1.703
    1.714
    1.717
    1.721
    60s
    M11/12SP-IIIg-5
  • Q10
    To what percentile of the disribution does 1.397 belongs if the sample size is 9?
    95th
    90th
    97th
    99th
    60s
    M11/12SP-IIIg-5

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