Question

please answer it p!!!!!!!!!!!!!!!!!!!​

Answer 1

Ques - What is the size of class interval ?

• The difference between the lower class limit and the upper class limit is the size of class interval.

So,

$\longrightarrow$Upper class limit - lowest class limit

$\longrightarrow$80 - 60 = 20.

Hence , 20 is the size of class interval.

Ques -What is the lower class limit of fourth class ?

• The lower class limit of fourth class is " 120 "

Ques - What is the upper class limit of sixth class ?

• The upper class limit of sixth class is " 180 "

Ques - Which class has the lowest frequency ?

• (140 - 160) class has the lowest frequency.

Ques - What is the class Mark of class interval having highest frequency ?

• The class Mark is basically refers to the sum of lower and upper class limit divided by 2.

Here, Class Mark of (100 - 120)

$\tt\longrightarrow{ Class \: Mark = \dfrac{Lower \: class \: limit + Upper \: Class \: limit}{2}}$

We know ,

Lower Class Limit → 100

Upper Class Limit → 120

Substituting the respective values , we get :

$\tt\longrightarrow{ Class \: Mark = \dfrac{100 + 120 }{2}}$

$\tt\longrightarrow{ Class \: Mark = \dfrac{220}{2}}$

$\boxed{\bf{ Class \: Mark = 110}}$

Hence, The Class Mark is 110

Ques - Make a histogram for the above data.

$:\implies$ Refer to the Attachment for the graph.

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