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9.Find the mean, variance and standard deviation using short-cut methodHeight 70-75 75-80 80-85 85-90 90-95 95-100 100-105 105-110 110-115in cmsNo. of 3 4 7 7children15 96 |
| Answer» 9.Find the mean, variance and standard deviation using short-cut methodHeight 70-75 75-80 80-85 85-90 90-95 95-100 100-105 105-110 110-115in cmsNo. of 3 4 7 7children15 96 | |