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Sampling methods

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA MA – FIA FMA › Sampling methods

  • This topic has 4 replies, 2 voices, and was last updated 5 years ago by John Moffat.
Viewing 5 posts - 1 through 5 (of 5 total)
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  • May 27, 2020 at 5:46 am #571913
    AverageAndy
    Member
    • Topics: 128
    • Replies: 34
    • ☆☆

    every 10th person is chosen randomly from each ward in a hospital. sir how is this scenario classified under stratified random sampling?

    and how is the following line classified under systematic sampling- one person in 10 is chosen from an alphabetical list of employees.

    Thank you.

    May 27, 2020 at 8:47 am #571932
    John Moffat
    Keymaster
    • Topics: 57
    • Replies: 54699
    • ☆☆☆☆☆

    The first example is stratified sampling because people are selected at random from each ward separately instead of from the hospital as a whole. So if, for example, one ward contains twice as many people as each other ward, then twice as many people from that ward will be chosen.

    The second example is systematic sampling if they go down the list and choose every 10th person (so they select person number 10 on the list, person number 20 in the list, person number 30, and so on).

    Have you watched my free lectures on sampling methods?

    May 27, 2020 at 10:19 am #571941
    AverageAndy
    Member
    • Topics: 128
    • Replies: 34
    • ☆☆

    Sir but we can argue that the first one is also an an example of systematic sampling? one person is selected in fixed intervals

    May 27, 2020 at 10:21 am #571942
    AverageAndy
    Member
    • Topics: 128
    • Replies: 34
    • ☆☆

    and for the second one no where have they mentioned that they are selecting every 10th, the line just states 1 in every 10, that one could be 2nd, 15th, 23rd and so on which makes this a non-sytematic sampling.

    May 27, 2020 at 2:38 pm #571962
    John Moffat
    Keymaster
    • Topics: 57
    • Replies: 54699
    • ☆☆☆☆☆

    You are correct in both your comments on those wordings.

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