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The intelligence quotient score (IQ) of a Grade 10 class is summarised in the table below.

  1. Write down the modal class of the data.
  2. Determine the interval in which the median lies.
  3. Estimate the mean IQ score of this class of learners.
in Mathematics by Diamond (80,744 points) | 45 views

1 Answer

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Best answer

Solution 1

Modal class
$100 \leq x<110$

Solution 2

$110 \leq x<120$

Solution 3

Estimate Mean IQ of students
$=\dfrac{3480}{30}$


$=116$

 

by Diamond (80,744 points)

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