1. The following table gives the marks for 120 students in a Mathematics exam.

Mark	0-9	10-19	20-29	30-49	50-79
Frequency	8	21	53	28	10

The fraction of students scoring marks below 49.5 is

2.Which of the following sets of scores has the greatest variability (range)?

a.22, 24, 26 ,29

b.42, 43, 48, 42

c.1, 11, 13, 14

d.1, 8, 9, 11, 15

3.In estimating the variance of a sample, n-1, is required when the sample is large but the population is small.

a.True

b.False

4.Sam visited the hospital five and a half days for the week, what kind of data is this?

a.qualitative

b.quantitative-continuous

c.quantitative-discrete

5.The mean varies from sample to sample when the samples are taken from the same population, while the population mean is fixed.

a.True

b.False