List of top Mathematics Questions on Statistics asked in Bihar Board X

Find the mean of the following distribution: 
\[\begin{array}{|c|c|c|c|c|c|c|c|} \hline \textbf{Class-interval} & 11-13 & 13-15 & 15-17 & 17-19 & 19-21 & 21-23 & 23-25 \\ \hline \text{Frequency} & \text{7} & \text{6} & \text{9} & \text{13} & \text{20} & \text{5} & \text{4} \\ \hline \end{array}\] 
 

The mean of first 6 even natural numbers is
The mode of 8, 7, 9, 3, 9, 5, 4, 5, 7, 5 is
The length of the class intervals of the classes, 2 - 5, 5 - 8, 8 - 11, ... is
If the mean of four consecutive odd numbers is 6 then the largest number is
The mode of 23, 15, 25, 25, 40, 27, 25, 22, 25, 22, 25, 20 is:
The median of a frequency distribution is 40 and the mean is 38.2. Then its mode is:
If the mean of \( x, x+3, x+5, x+7, x+10 \) is 9, then the value of \( x \) is:
The mean of the first seven multiples of 5 is:
The median of 20, 13, 18, 25, 6, 15, 21, 9, 16, 8, 22 is:
The median of 15, 6, 16, 8, 22, 21, 9, 18, 25 is:
The mode of 0, 6, 5, 1, 6, 4, 3, 0, 2, 6 is:
The median and mode of a frequency distribution are 48:64 and 46:52 respectively. Then its mean is:
If the mean of five observations \(x\), \(x + 2\), \(x + 4\), \(x + 6\), and \(x + 8\) is 11, then the value of \(x\) is:
Find the median of the following data:
\[ \begin{array}{|c|c|} \hline \text{Class Interval} & \text{Frequency} \\ \hline 40-45 & 2 \\ 45-50 & 3 \\ 50-55 & 8 \\ 55-60 & 6 \\ 60-65 & 6 \\ 65-70 & 3 \\ 70-75 & 2 \\ \hline \end{array} \]
Find the mean of the following data: \ \[ \begin{array}{|c|c|c|c|c|c|} \hline \text{Variable} & 2 & 4 & 6 & 10 & 12 \\ \hline \text{Frequency} & 3 & 2 & 3 & 1 & 2 \\ \hline \end{array} \]
The mode of 23, 15, 25, 40, 27, 25, 22, 25, 20 is:
The median of a frequency distribution is 40 and mean is 2. Then its mode is:
If the mean of \(x, x + 3, x + 5, x + 7, x + 10\) is 9, then the value of \(x\) is
Find the mode of the following distribution:
\[ \begin{array}{c|c|c|c|c|c|c} \text{Class-Interval} & 80-85 & 85-90 & 90-95 & 95-100 & 100-105 & 105-110 & 110-115 \\ \hline \text{Frequency} & 33 & 27 & 85 & 155 & 110 & 45 & 15 \end{array} \]
The Mean of First Seven Multiples of 5 is
The median of 20, 13, 18, 25, 6, 15, 21, 9, 16, 8, 22 is:
Find the mean of the following data:
\[ \begin{array}{c|c|c|c|c|c} \text{Variable} & 4 & 6 & 8 & 10 & 12 \\ \hline \text{Frequency} & 4 & 8 & 14 & 11 & 3 \end{array} \]
The mode of 0, 6, 5, 1, 6, 4, 3, 0, 2, 6, 5, 6 is:
If a class interval has a median class of 48-64 and mode class of 46-52, then its mean is: