[PDF] assumed mean for grouped data pdf

  • How do you find the assumed mean in grouped data?

    Assumed Mean can be calculated using the formula a + (?fidi /?fi). Here, a denotes the assumed mean, fi is the frequency of the ith class, di is the deviation of the ith class, ?fi refers to the total number of observations and xi is the class mark.

  • How do you assume a value in assumed mean method?

    The main trick to use in assuming the mean is to assume the mean as the class having the highest frequency and assume a mean which is in the middle of the classes. In this way of assuming, the calculations will be easier than assuming a mean at the end points of the given range.

  • What is the mean of 10 20 30 40 50?

    ? The average is 30.
  • To find mode for grouped data, use the following formula: ? ?1 ? M o d e = Lmo + ? ?i ? ? 1 + ? 2 ? Where: i is the class width ?1 is the difference between the frequency of class mode and the frequency of the class after the class mode ? 2 is the difference between the frequency of class mode and the frequency of the
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