SMS per day		ratio	1. What is the level of measurement?
3		21	2. Find the sample size n.
4.5		3	3. Find the minimum.
5		27	4. Find the maximum.
5		24	5. Find the range.
5		15	6. Find the midrange.
5		5	7. Find the mode.
6		8	8. Find the median.
7		10.93	9. Find the sample mean x.
7		7.56	10. Find the sample standard deviation sx.
8		0.69	11. Find the sample coefficient of variation CV.
8		4	12. Bin width
9			13. Histogram
10
10		Ball bounce bin upper limits (x)	Frequency F	Relative Frequency p(x)
10		7	9	0.43
10		11	7	0.33
20		15	0	0
20		19	0	0
25		23	2	0.1
25		27	3	0.14
27		Sums:	21	1
			14. Sketch a relative frequency histogram of the data
		bimodal	15. What is the shape of the histogram?
		0.43	16. p(x ≤ 7) =
		0.095	17. p(19 < x ≤ 23) =
		50.00%	18. p(student has cell phone) = 30/60
		More likely	19. The probability that an FSM resident has a cell phone is estimated at 13% to 19%.