BUSINESS ADMINISTRATION
BUSINESS MATHEMATICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is no mean
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132
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40
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122
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Detailed explanation-1: -9 + 7 + 11 + 13 + 2 + 4 + 5 + 5 = 56. So, the total is 56. And there are 8 numbers in the given sequence. mean = 7.
Detailed explanation-2: -Assumed Mean can be calculated using the formula a + (fidi /fi). Here, a denotes the assumed mean, fi is the frequency of the ith class, di is the deviation of the ith class, fi refers to the total number of observations and xi is the class mark.
Detailed explanation-3: -To calculate mean of grouped data given, we have formula ¯x=∑fixi∑fi . Now, we have to put the values in the formula to get the mean of the given data.
Detailed explanation-4: -’h’ is the class size which is assumed to be equal. ‘f1’ is the frequency of the modal class. ‘f0’ is the frequency of the class preceding the modal class. ‘’f2’ is the frequency of the class succeeding the modal class. Modal class is the class with maximum frequency.