Inter School Quiz (English Medium) Paper 05

Which of the following statements is false?

• Inferential statistics used to make inferences from the sample and generalized them to the population.

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

• Once a particular data point can be put into a group such an observation is known as categorical data.

• Individual observations cannot be identified in a grouped frequency distribution.

Which of the following statements is true?

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

• There is an absolute zero in interval scaled data.

• A ‘or more’ ogive falls upwards from left to the right.

• No any mathematical operation can be launched on nominal data.

Since it is assumed that all the observations inserted in a class interval overlap on the class mark (class midpoint) the ……………. is occurred.

• Sampling error

• Non-sampling error

• Grouping error

• Editing error

Representation of the movement of a variable in a linear formation in accordance with a given scale on co-ordinate plan is known as a ……………...

• Graph

• Chart

• Multi-dimensional chart

• Z chart

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

• negatively skewed

• positively skewed

• symmetrical

• leptokurtic

In the case of symmetrical distribution, the most appropriate measures of central tendency and dispersion is ………………… respectively.

• mean and standard deviation

• median and standard deviation

• median and quartile deviation

• mean and quartile deviation

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

• mean

• quartile deviation

• median

• range

The median 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?

• Product Moment Correlative Coefficient is a measure of dimension.

• Product Moment Correlative Coefficient is independent from unit of measures.

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

• If there is a non-linear relationship between two variables, Product Moment Correlative Coefficient equals to one.

If the regression coefficient of a specific regression line is -2.4, mean values of independent and dependent variables are 5, 18 respectively. Find the constant term of that regression line?

• 6

• 30

• 0.6

• 0.3