Question

Q1. Read the statement below and decide whether it is True or False.

For highly skewed data the sample median is a more sensible measure of centre than the sample mean.

a) True

b) False

Q2. Read the statement below and decide whether it is True or False.

Only properly designed and well executed experiments can reliably establish causation.

a) True

b) False

Q3. Read the statement below and decide whether it is True or False.

If the tail proportion in the re-randomisation distribution is large then we may conclude that chance was acting alone.

a) True

b) False

Q4. Read the statement below and decide whether it is True or False.

Taking larger samples will not reduce the effects of selection bias and other nonsampling errors.

a) True

b) False

Q5. Read the statement below and decide whether it is True or False.

A condence interval is an interval of values, obtained from a random sample taken from the population, of which any number in the interval is a plausible value for the population parameter.

a) True

b) False

Answer 1

Solution :

1) For highly skewed data the sample median is a more sensible measure of centre than the sample mean.

The given statement is true.

2) Only  properly designed and well executed experiments can reliably establish causation.

Given statement is true.

3) If the tail proportion in the re-randomisation distribution is large then we may conclude that chance was acting alone.

Given statement is true.

4) The increase in sample size does not reduce the non sampling errors.

Given statement is true.

5) A confidence interval is an interval of values, obtained from a random sample taken from the population, of which any number in the interval is a plausible value for the population parameter.

Given statement is true.