Sampling Methods and Bias

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  • Опубліковано 2 тра 2012
  • A look at some of the Sampling Methods and types of Bias.

КОМЕНТАРІ • 16

  • @ameenalgamal.9741
    @ameenalgamal.9741 8 років тому +1

    I just wanted to thank you for all the video

  • @diannalemus530
    @diannalemus530 6 років тому

    You really did an excellent job of explaining this! Thanks! :)

  • @thomasnguyen4943
    @thomasnguyen4943 8 років тому +1

    Good, explanations ! My professor talks like she's rapping really hard to understand. Thanks for the clarification :]

  • @mikediamond2422
    @mikediamond2422 6 років тому

    Exactly what i was looking for thank you so much!

  • @agnesgeoffrey157
    @agnesgeoffrey157 8 років тому

    Asante, you are awesome!very helpful video

  • @khalidhussain2894
    @khalidhussain2894 7 років тому

    Excellent lecture!!!!!!!!!!1111

  • @muhammedeminkizilkaya8014
    @muhammedeminkizilkaya8014 9 років тому

    Thank you so much Adam!

  • @dylandelaney56
    @dylandelaney56 7 років тому

    This helped a lot thanks!!

  • @raylance123
    @raylance123 10 років тому

    Good explanations

  • @trucnguyen5726
    @trucnguyen5726 9 років тому

    Awesome :D

  • @abidemiodesola657
    @abidemiodesola657 12 років тому

    Hello Sir,
    I wanted to investigate the perception of consumers towards a retail format. So I constructed an online questionnaire on facebook for people to fill out and also printed it out and took it to the store for customers to fill out. I just wanted to get information from people who had shopped.
    I am little bit confused on the sampling method used.

  • @StanislavMudrets
    @StanislavMudrets 6 років тому

    What do you call the bias where the person finds it hard to get to a place, so he/she goes to adjacent spot and asks people there instead?

    • @DobynsBennettMath
      @DobynsBennettMath  3 роки тому

      A little late, but that's convenience bias. The person is making choices that are convenient - not random.

  • @DobynsBennettMath
    @DobynsBennettMath  11 років тому +1

    Well, how did you give it out at the store? Did you use a random number generator to generate a number (like 10) and then give every 10th person a questionnaire? If so, that would be systematic sampling. Did you give them out to everyone? Well, then you might have suffered from Convenience bias. Posting the survey on Facebook is Voluntary bias/Convenience bias. Your sampling method has to be random to be fair.

  • @jeromez7148
    @jeromez7148 9 років тому

    It impossible to get the population distribution in practice