Inter School Quiz (English Medium) Paper 03

Which of the following statements is true?

• The infinite population is also known as the countable population.

• Sampling errors cannot be reduced by increasing the sample size.

• The set of all elements/members included in the field of the statistical study is termed as ‘Population’.

• In the case of the census, there is a difference between the target population and sampled population.

Which of the following statements is false?

• Lorenz curve is used for comparing a specific situation with the common situation.

• The value of Gine coefficient is between 0 - 1.

• Stem and leaf diagram as an optional method to the array of data.

• A “more than” ogive falls downwards from left to the right.

The sum of the frequencies below the …………………… of a class interval of a distribution is known as the ‘less than’ cumulative frequency of that class interval.

• upper-class limit

• upper-class boundary

• lower-class boundary

• upper-class limit

‘Less than’ ogive and ‘or more’ ogive both intersect at …………. of the distribution, and that value can be identified by drawing a perpendicular line from that intersected point to the horizontal axis.

• mode

• first quartile

• mean

• Second quartile

The mean wages of 10 employees of a particular company has been calculated as 6500. The administrator of the company was decided that amended Rs.200 as a fine since employees have damaged to a new machine. Then the new mean wages of 10 employees should be,

• 6700

• 6520

• 6300

• 6500

In the case of symmetrical distribution, the most appropriate measures of dispersion is …………………

• mean

• standard deviation

• mean deviation

• quartile deviation

What is the most appropriate measure used to compute the Mean of data in the different Relative Importance in averaging rates of increase or decrease?

• Arithmetic mean

• Harmonic mean

• Weighted mean

• Geometric mean

The moderately skewed distribution, the median and mean are 15 and 18 respectively. What is the most possible value for the mode of that distribution?

• 9

• 15

• 12

• 17

Which of the following statements is false?

• If the regression coefficient of Y on X is greater than one, the regression coefficient of X on Y must be less than one.

• If the regression coefficient of Y on X positive, the correlation coefficient is also positive.

• Product Moment Correlative Coefficient lay the range of 0 to 1.

• Units of the regression coefficient are the same as the units of the dependent variable.

In simple linear regression analysis, the coefficient of determination was found to be 0.81. What is the value of product movement correlation coefficient of that data set?

• 0.9

• 0.09

• 0.81

• 0.66