Mode :
Mode is that value of the observation which occurs maximum number of times.
If there are two or more observations are repeated maximum number of times then each number is a mode.
If there is no any observations repeated then there is no mode.
It is denoted by `Z`

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1. Find the Mode of `69,66,67,69,64,63,65,68,72`

Solution:
Mode :
In the given data, the observation `69` occurs maximum number of times (`2`)

`:. Z = 69`

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2. Find the Mode of `85,96,76,108,85,80,100,85,70,95`

Solution:
Mode :
In the given data, the observation `85` occurs maximum number of times (`3`)

`:. Z = 85`

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3. Find the Mode of `73,70,71,73,68,67,69,72,76,71`

Solution:
Mode :
In the given data, the observation `71,73` occurs maximum number of times (`2`)

`:. Z = 71,73`

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4. Find the Mode of `3,13,11,15,5,4,2`

Solution:
Mode :
In the given data, no observation occurs more than once.
Hence the mode of the observations does not exist, means mode=0.

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