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

Thirty women were examined in a hospital by a doctor and the number of heart beats per minute recorded and summarised as follows. Find the mean heart beats per minute for these women, choosing a suitable method. Heart beats (per min.) 65-68 68-71 71-74 74-77 77-80 80-83 83-86 No. of women: 2 4 3 8 7 4 2

Thirty women were examined in a hospital by a doctor and the number of heart beats per minute recorded and summarised as follows. Find the mean heart beats per minute for these women, choosing a suitable method. No. of heat 65-68 68-71 71-74 74-77 77-80 80-83 83-86 beats (per min.) No. of women: 2 4 3 8 7 4 2

Thirty women were examined in a hospital by a doctor and the number of heartbeats per minute were recorded and summarised as follows. Find the mean heartbeats per minute for these women, choose a suitable method. {:("Number of heartbeats 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):}

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

Thirty women were examined in a hospital by a doctor and their of heart beats per minute were recorded and summarised as shown. Find the mean heart beats per minute for these women, choosing a suitable method.

Thirty women were examined in a hospital by a doctor and their heart beats per minute were recorded and summarised as shown . Find the mean heart beats per minute for these women, choosing a suitable method.

Thirty women were examined in a hospital by a doctor and the number of heat beats per minute were recorded and summarised as follows: Find number of women have heart bean lessthan 80 and more than 71