Inter School Quiz (English Medium) Paper 04

Which of the following statements is false?

• Sampling errors are present even in complete enumeration.

• Both the Lorenz curve and Ogive are based on cumulative frequencies.

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

• Individual observations can be identified in an ungrouped frequency distribution.

Which of the following statements is true?

• Profile chart is used for comparing a specific situation with the common situation.

• The sum of the areas of all the rectangles of a histogram is less than the area under the frequency polygon.

• A ‘less than’ ogive falls downwards from left to the right.

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

……………….. is an interviewing technique in which the respondent or interviewer uses an electronic device to answer questions.

• Web Site Survey

• Audio Computer-Assisted Self Interview (ACASI)

• E-mail Survey

• Computer-Assisted Personal Interview (CAPI)

The difference of the …………….. of two successive classes (If the class widths are similar) always equals to the class width.

• class frequency

• class mid-points

• lower boundary

• upper boundary

In a frequency distribution, if the mean is less than the mode and the median is greater than the mean but less than the mode, then the shape of the distribution is,

• negatively skewed

• positively skewed

• symmetrical

• leptokurtic

In the case of symmetrical distribution, the most appropriate measure of central tendency is …………………

• mean

• standard deviation

• mean deviation

• median

In the case of a frequency distribution with open-ended classes, the measure of dispersion which can be easily used is,

• mean deviation

• quartile deviation

• standard deviation

• range

The third quartile of the series 2, 2, 9, 4, 7, 9, 5, 6, 6 is equals to ……………

• 7.5

• 6

• 7

• 8

Which of the following statements is false?

• Unit of the constant-coefficient is same as the unit of the dependent variable.

• Unit of the product movement correlation coefficient is same as the unit of the dependent variable.

• Unit of the predicted values is same as the unit of the dependent variable.

• Unit of the regression coefficient is same as the unit of the dependent variable.

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

• 0.9

• 0.09

• 0.66

• 0.81