Objective Type Questions 1. The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation? ● a. 60.4% ● b. 48.3% ● c. 35.7% ● d. 27.8% ● 2. Data collected by NADRA to issue computerized identity cards (CICs) are ● a. Unofficial data ● b. Qualitative data ● c. Secondary data ● d. Primary data 3. Given $X_1=12,X_2=19,X_3=10,X_4=7$, then $\sum_{i=1}^4 X_i$ equals? ● a. 36 ● b. 48 ● c. 41 ● d. 29 4. The number of accidents in a city during 2010 is ● a. Discrete variable ● b. Continuous variable ● c. Qualitative variable ● d. Constant 5. According to the empirical rule, approximately what percent of the data should lie within $\mu \pm 2\sigma$? ● a. 75% ● b. 68% ● c. 99.7% ● d. 90%1 6. Census reports used as a source of data is ● a. Primary source ● b. Secondary source ● c. Organized data ● d. None 7. The grouped data is also called ● a. Raw data ● b. Primary data ● c. Secondary data ● d. Qualitative data ● 8. Define : chi square ● 9. Define : hypothesis ● 10. Define : regression ●
Define following terms: Type -1 error, type- 2 error, correlation, standard error, regression, standard deviation
[8 marks]Write a Short note on correlation
[7 marks]How strong is the relationship between the alcohol content and the number of calories in 12-ounce beer? To determine if there is a positive linear correlation, a random sample was taken of beer’s alcohol content and calories for several different beers ("Calories in beer,," 2011), and the data are in table. Find the correlation coefficient and the coefficient of determination using the formula.
[8 marks]Explain demography.
[7 marks]Suppose the correlation coefficient is 0.2 and the number of observations is 32. What is the calculated test statistic? Is this significant correlation using a 5% level of significance?
[8 marks]What are the types of hypothesis testing
[7 marks]How Planning will be affected , discuss with reference to demography
[8 marks]Find the standard error of the estimate for the beer data using the formula. To determine if there is a positive linear correlation, a random sample was taken of beer’s alcohol content and calories for several different beers ("Calories in beer,," 2011), and the data are in table
[7 marks]Write a Short note on Chi square goodness of fit test
[8 marks]Discuss Multiple regression
[7 marks]Suppose the estimated slope coefficient is 0.78, the sample size is 26, the standard error of the coefficient is 0.32, and the level of significance is 5%. Is the slope difference than zero?
[8 marks]Explain the Significance of R2
[7 marks]Write the Assumptions of Pearson's correlation coefficient
[8 marks]Discuss least square method Table for Reference3
[7 marks]