Inter School Quiz (English Medium) Paper 01

Which of the following statements is true?

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

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

• The pilot survey is conducted only for testing a survey questionnaire.

• The subject of statistics may be regarded as the study of ‘Variation’

Which of the following statements is false?

• If a specific characteristic obtains two or more than two different values such characteristic is known as ‘Variable’.

• Data collected from any outside person or outside institution for a particular study such data are called external data.

• Collar size of a t-shirt is an example of continuous data.

• Incurring higher cost is one of the demerits of primary data.

As the term of accuracy ………………. is the lowest accurate pictorial presentation because it couldn’t represent the minor variations of specific variable.

• Histogram

• Pictogram

• Pie Chart

• Simple Bar Chart

………………….. is used for comparing a specific situation with the common situation.

• Lowrence Curve

• Profile Chart

• Line Chart

• Z Chart

The mean marks of 10 students of a particular class has been calculated as 65. Later it was decided that give extra 5 marks for each students since the total marks was not equals to 100. Then the new mean marks of 10 students should be

• 70

• 60

• 65

• 65.5

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

• Median

• Standard Deviation

• Mean Deviation

• Quartile Deviation

What is the most appropriate measure in averaging rates of increase or decrease?

• Arithmetic Mean

• Harmonic Mean

• Weighted Mean

• Geometric Mean

The moderately skewed distribution, the mode and mean are 10 and 25 respectively. What is the most possible value for the median of that distribution?

• 15

• 45

• 20

• 17

In regression analysis, the method of least squares,

• maximizes the error sum of squares

• minimizes the summation of the error

• minimize the error sum of squares

• maximize the summation of the error

Multiplication of regression coefficient of Y on X regression line and X on Y regression line of same data set is equals to ……………….. of the regression equation.

• coefficient of determination

• product movement correlative coefficient

• rank correlative coefficient

• coefficient of covariance