Statistics Quiz 11

Question 1

If assumed mean is &lsquo;a&rsquo;, then mean =

Accepted Answer

$a + \frac{\sum f_i d_i}{\sum f_i}$

Answer

$\frac{a+ \sum f_i d_i}{\sum f_i}$

Answer

$a- \frac{\sum f_i d_i}{\sum f_i}$

Answer

$a + \frac{\sum f_i}{\sum f_i d_i}$

Question 2

In the formula of Mode in the grouped data &lsquo;l&rsquo; represents

Accepted Answer

lower limit of the class with highest frequency

Answer

lower limit of the class with lowest frequency

Answer

upper boundary of the class with highest frequency

Answer

lower boundary of the class with low frequency

Question 3

&hellip;&hellip;&hellip;&hellip; of all bars is same in bargraph.

Accepted Answer

Width

Answer

Length

Answer

Circle

Answer

Height

Question 4

In the formula of median in the grouped data &lsquo;l&rsquo; represents

Accepted Answer

lower limit of the median class

Answer

upper limit of the median class

Answer

upper boundary of the median class

Answer

lower boundary of class with highest frequency

Question 5

The class mark of a class interval is

Accepted Answer

${\frac{upper \, boundary + lower \, boundary}{2}}$

Answer

upper boundary + lower boundary

Answer

upper boundary &ndash; lower boundary

Answer

${\frac{upper \, boundary - lower \, boundary}{2}}$

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