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Question

If the mean of a distribution is 78 and the median is 61, then the value of mode is:

The correct answer is
27

Mode Calculation Using Empirical Relationship

For a moderately skewed distribution, the relationship between the mean, median, and mode can be approximated by the empirical formula:

$Mode = 3 \times Median - 2 \times Mean$

Given Values:

  • Mean = 78
  • Median = 61

Applying the Formula:

  1. Substitute the given Mean and Median into the formula:

    $Mode = 3 \times 61 - 2 \times 78$

  2. Calculate the terms:

    $Mode = 183 - 156$

  3. Compute the final value:

    $Mode = 27$

Therefore, the mode of the distribution is 27.

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Important Questions from Elementary Statistics

  1. Demand for seats in a university is at its highest in the fall; demand also trends to grow and fall off in 25 year waves. In time service forecasting, the former demand characteristic would be called ______ and the latter would be called _______.

  2. The system of combining two or more overlapping series of index numbers to obtain a single continuous series is called

  3. The rise in the number of patients due to heatstroke is an example of:

  4. According to government data, 24 percent of teenagers in India under the age of 18 years live in households with incomes that are classified at a particular income level. A simple random sample of 400 teenagers in India under the age of 18 years was selected for a study of learning. If the government data is correct, which of the following best approximates the probability that at least 27 per cent of the teenagers in the sample live in households that are classified at a particular income level?

  5. Which index satisfies the factor reversal test?

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