The heights of 50 students are tabulated asbelow: Class interval (in cm) Frequency 145 - 146 1 147 - 148 2 149 - 150 4 151 - 152 5 153 - 154 8 155 - 156 15 157 - 158 9 159 - 160 6Which one of the following is correct about the distribution?

Question

The heights of 50 students are tabulated asbelow:    Class interval (in cm)  Frequency  145 - 146  1  147 - 148  2  149 - 150  4  151 - 152  5  153 - 154  8  155 - 156  15  157 - 158  9  159 - 160  6Which one of the following is correct about   the distribution?

Examsnet · Accepted Answer

Correct Answer is :  It is negatively skewed

C.I.	x	f	d	fd	cf
145 - 146	145.5	1	-8	-8	1
147 - 148	147.5	2	-6	-12	3
149 - 150	149.5	4	-4	-16	7
151 - 152	151.5	5	-2	-10	12
153 - 154	153.5	8	0	0	20
155 - 158	155.5	15	2	30	35
157 - 158	157.5	9	4	36	44
159 - 160	159.5	6	6	36	50
		Σ f = 50		Σ fd = 56

Statistics Practice Test 1