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Math Help - Need help with these 3 Multiple Choice Questions

  1. #1
    Newbie
    Joined
    Jan 2010
    Posts
    7

    Unhappy Need help with these 3 Multiple Choice Questions

    1.
    (Points: 1)
    The researcher should use which type of sampling if the researcher wants to know characteristics of certain subgroups of the population.

    1. simple random sampling
    2. convenience sampling
    3. orthogonal sampling
    4. stratified random sampling



    2.
    (Points: 1)
    A parameter is:

    1. a value obtained by using information from all the individuals of the population
    2. a sample statistic
    3. a value obtained by using information from the individuals of a sample
    4. a representative sample from a population


    3.
    Number
    1-3
    4-6
    7-9
    10-12
    13-15
    16-18
    Frequency
    16
    22
    27
    55
    30
    22

    The midpoint of the bottom class on the table is:
    1. 22
    2. 17.5
    3. 16-18
    4. 17
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  2. #2
    Newbie
    Joined
    Jan 2010
    Posts
    7
    Sorry one more question.

    4.
    (Points: 1)

    Estimating a parameter for a population based on data from a sample is a type of:

    1. inferential statistics
    2. data set
    3. descriptive statistics
    4. census
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