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The class mark of the class 90-120 is
In a frequency distribution, the mid value of a class is 10 and the width of the class is 6. The lower limit of the class is
The class marks of the median class of the following data is
The class-mark of the class 130-150 is:
The class marks of a frequency distribution are given as follows: 15, 20, 25, ... The class corresponding to the class mark 20 is:
The class marks of a continuous distribution are: 1.04, 1.14, 1.24, 1.34, 1.44, 1.54 and 1.64. Is it correct to say that the last interval will be 1.55 - 1.73? Justify your answer.
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