MTH001 Quiz 5 by HB

Q1. Measure of dispersion is the measurement of the spread or variability in a __________.

1. all of the above
2. data set
3. set
4. variable

Q2. For the given data 2, 3, 5, 0, – 8, the geometric mean will be ____________.

1. zero
2. negative
3. indeterminate
4. positive

Q3. If an observation in the data set is zero then its geometric mean is ____________.

1. positive
2. negative
3. zero
4. indeterminate

Q4. At what condition the mean, the median and the mode are equal in a frequency distribution?

1. If it has a skewed distribution curve.
2. If it is a unimodal curve of moderate skewness.
3. If it has a non-symmetrical frequency curve.
4. If it has a symmetrical frequency curve.

Q5. In skewed distributions, if the mean of a dataset is 30 and the median is 25, what is the mode?

1. 25
2. 20
3. 15
4. 30

Q6. If the standard deviation of a given data is 9 then the variance is ___________.

1. 9
2. 3
3. 81
4. 21.35

Q7. What is the harmonic mean of 5 and 10?

1. 20/3
2. 3/10
3. 10/3
4. 3/20

Q8. If standard deviation is 5.7 and mean is 1 then the coefficient of standard deviation is

1. 1.754
2. 570
3. 5.7
4. 0.01754