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Presentation of data — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPresentation of data1 Mark
Question
State the main difference between ‘less than’ type cumulative frequency and ‘more than’ type cumulative frequency. Explain : The cumulative frequency the class $40-49$ is $85.$
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Answer

The cumulative frequency of the class $40—49$ is $85$ means the number of observation less than the upper boundary point $49.5$ is $85$. In other words the sum of frequencies up to the class $40—49$ is $85$.

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