Question

The class mark of the class 20-29 is.....i want hole explanation.​

Answer 1

Answer:

★ ANSWER :

The class mark of the class 20 - 29 is 24.5 .

Step-by-step explanation:

★ QUESTION :

The class mark of the class 20 - 29 is _______ .

★ CONCEPT USED :

$\rm{Class \: Mark \: ( x_{i} ) \: = \: \dfrac{Upper \: class \: limit \: + \: Lower \: class \: limit}{2} }$

★ SOLUTION :

$\rm{Class \: Mark \: ( x_{i} ) \: = \: \frac{Upper \: class \: limit \: + \: Lower \: class \: limit}{2} } \\ \\ \sf {Class \: Mark \: ( x_{i} ) \: = } \: \frac{29 \: + \: 20}{2} \\ \\ \sf {Class \: Mark \: ( x_{i} ) \: = } \: \frac{49}{2} \\ \\ \sf {Class \: Mark \: ( x_{i} ) \: = }\: 24.5$

★ ANSWER :

The class mark of the class 20 - 29 is 24.5 .

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