Answer :
The mean of on road accidents reported to the police for the days in December is 6.7
What is the meaning of mean ?
In a group of numbers, the mean is the average or most common value. It is a measure of central tendency of a probability distribution along the median and mode in statistics.
It is given in the question about the information on road accidents reported to the police for the days in December.
Mid point of (0-5) = 2.5
Mid point of (6-10) =8
Mid point of (11-15)=13
Mid point of (16-20) = 18
Mean = (∑Midpoint * frequency )/ (∑ frequency)
[tex]\rm Mean = \dfrac{2.5\times18+8 \times4+13\times6+18\times3}{18+4+6+3}\\\\\\\rm Mean = \dfrac{209}{31}\\[/tex]
Mean = 6.74
Mean = 6.7
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