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प्रश्न
Explain the meaning of the term Frequency.
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उत्तर
Frequency: The number of observations corresponding to class is called its frequency.
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संबंधित प्रश्न
Explain the meaning of the term Class-size.
Explain the meaning of the term Class-mark.
Find the class marks of classes 10 -25 and 35 – 55.
While calculating the mean of a given data by the assumed-mean method, the following
values were obtained.
`A=25, sum f_i d_i=110, sum f_i= 50`
Find the mean.
The distribution X and Y with total number of observations 36 and 64, and mean 4 and 3 respectively are combined. What is the mean of the resulting distribution X + Y?
The observation 29, 32, 48, 50, x, x+2, 72, 78, 84, 95 are arranged in ascending order. What is the value of x if the median of the data is 63?
The median of 19 observations is 30. Two more observation are made and the values of these are 8 and 32. Find the median of the 21 observations taken together.
Hint Since 8 is less than 30 and 32 is more than 30, so the value of median (middle value) remains unchanged.
Find the class marks of classes 10−25 and 35−55.
Can the experimental probability of an event be a negative number? If not, why?
Find the range of given data: 46, 35, 78, 90, 20, 56, 45, 76.
