The weights of students in a class of ten are: 120 130 160 170 200 210 190 190 140 calculate the standard deviation for the data. (5 marks) The table below shows the distribution of weights of 140 students joining a certain university: Weight (in pounds) Frequency 80-89 4 90-99 23 100-109 49 110-119 38 120-129 17 130-139 6 140-149 3 Plot a histogram for the above data.
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