1) What do you need to use while estimating the mean from a grouped frequency table? a) The mid point b) The upper limit c) Just add and divide d) It’s the middle one e) Highest take lowest 2) Where do you plot the horizontal coordinate on a cumulative frequency curve? a) The mid point b) The lowest point c) The upper limit 3) The mean age of 10 students is 11, a 22 year old teacher joins them the new mean is? a) 16 b) 18 c) 12

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