1. There is a very high inverse relationship between measures of 'overweight' and 'life expectancy'. Which one of the following value of the coefficient of correlation is consistent with the statement?
2. The formula to determine the number of classes given by Sturge's rule is which one of the following?
Where, $$K$$ = Number of classes
$$N$$ =Total number of observations
$$\left( {\log \,N} \right)$$ = Logarithm of the total number of observations
Where, $$K$$ = Number of classes
$$N$$ =Total number of observations
$$\left( {\log \,N} \right)$$ = Logarithm of the total number of observations
3. Which type of data is not suited for calculation of Karl Pearson's correlation coefficient?
4. Time series displays
5. A researcher wants to test the significance of the difference between the average performance of the two small sized samples when the information of the population standard deviation is not available, which one of the following hypothesis-testing is suitably used?
6. The standard deviation is independent of:
7. If the dependent variable increases as the independent variable increases in an estimating equation, the coefficient of correlation will be inthe range:
8. Where r is zero the regression lines but each other making an angle of
9. A survey determines that in a locality, 33% go to work by bike, 42% go by car, and 12% use both. The probability that a random person selected uses neither of them is:
10. From the cumulative frequency diagram which one of the following types of average can be estimated?
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