(a) Toss four coins 50 times and tabulate the number of heads at each toss.

ollowing scores represent the fina nation grades for an elementary tics course: 79,32,57,74,52,70,82,36,80,77,81, 54,64,72,88,62,74,43,60,78,89,76 63,80,85,61 (a) Construct a stem af plot for the examination grade ch the stems are 1, 2, 3,..., 9. (b) fruct a relative frequency gram, draw an estimate of the of the distribution, and discuss ewness of the distribution. (c) ute the sample mean, sample n, and sample standard deviation IIIIIIIMI AVIIIIIIVIVII ysics / Semester -IV