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Solution - Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarized as follows - Mean of Grouped Data

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Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarized as follows. Fine the mean heart beats per minute for these women, choosing a suitable method.

 

Number of heart beats per minute 65 − 68 68­ − 71 71 −74 74 − 77 77 − 80 80 − 83 83 − 86
Number of women 2 4 3 8 7 4 2

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Solution for question: Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarized as follows concept: Mean of Grouped Data. For the course CBSE
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