write is mean of a group of a observation find mean of the given observation of the 1,3,8,21,31,24,80​

2 thoughts on “write is mean of a group of a observation find mean of the given observation of the 1,3,8,21,31,24,80​”

1. Answer:

   the mean = aum of observation/no. of observation

   so

   mean=1+3+8+21+31+24+80/7

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2. Given :

   • Given observations are 1, 3, 8, 21, 31, 24, 80

   To Find :

   • Mean of the given observations.

   Calculation :

   In order to calculate the mean of the the given observations, formula is given by,

   [tex] \underline{ \boxed{ \tt{Mean = \dfrac{Sum \: of \: all \: observations}{Number \: of \: observations}}}} [/tex]

   • Number of all observations is 7.

   Firstly, let’s calculate the sum of all numbers,

   [tex] \rightarrow \bf 1 + 3 + 8 + 21 + 31 + 24 + 80 \\ [/tex]

   On adding the numbers,

   [tex]\rightarrow{ \pink{\boxed{\bf 168}}} [/tex]

   Therefore, sum of all observations is 168.

   Putting the values,

   Now let’s substitute values in the equation,

   Using formula –

   [tex] \underline{ \boxed{ \tt{Mean = \dfrac{Sum \: of \: all \: observations}{Number \: of \: observations}}}} [/tex]

   Plugging the values,

   [tex] \longrightarrow \bf Mean = \dfrac{168}{7} \\ [/tex]

   On dividing the numbers,

   [tex] \longrightarrow{ \underline{ \boxed{\bf Mean = 24}}} \: \blue{\bigstar} [/tex]

   Henceforth,

   • The mean of the given observations is 24.

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