Statistics Internal Examination

Find the Class Width of Interval 5.25 - 11.25 is ____

Smooth Hand Free Curve nearest to all the points is____

Data collected by Door to Door Visit______

Method used to compute average or central value of collected data is considered as

• Measures of positive variation

• Measures of central tendency

• Measures of negative skewness

• Measures of negative variation

A data value = Stem Value x Stem Size + Leaf Value x Leaf size

• True

• False

Measurement techniques used to measure extent of skewness in data set values are called

• Measure of median tail

• Measure of distribution width

• Measure of tail distribution

• Measure of skewness

'less than type distribution' and 'more than type distribution' are types of

• Class distribution

• Cumulative class distribution

• Cumulative frequency distribution

• Upper limit distribution

If quartile range is 24 then quartile deviation is

• 48

• 12

• 24

• 32

If median is 12, mean is 15 and standard deviation of data is 3 then Karl Pearson's coefficient of skewness is

• 17

• 27

• 23

• 3

In measures of skewness, absolute skewness is equal to

• Mean+mode

• Mean-mode

• Mean+median

• Mean-median

Measurement of Gender is qualitative data

• True

• False

Variability which is defined as difference between third and first quartile is considered as

• Percentile range

• Deciles range

• Quartile range

• Inter quartile range

Data based on workers salary is as 2500, 2700, 2600, 2800, 2200, 2100, 2000, 2900, 3000, 2800, 2200, 2500, 2700, 2800, 2600 and number of classes desired is 10 then width of class interval is

• 400

• 300

• 100

• 200

Arithmetic mean is 12 and number of observations are 20 then sum of all values is

• 8

• 32

• 240

• 1.667

In quartiles, central tendency median to be measured must lie in

• First quartile

• Second quartile

• Third quartile

• Four quartile

In kurtosis, frequency curve which looks more peaked than normal curve of bell shaped distribution is classified as

• Mega curve

• Mesokurtic

• Leptokurtic

• Platykurtic

Classification method in which upper and lower limits of interval is also in class interval itself is called

• Exclusive method

• Inclusive method

• Mid point method

• Ratio method

A graph of cumuative distribution is called

• Histogram

• Frequency Curve

• Ogive

• None of above

In Histrogram area of each rectangle is equal to

• Size of class interval

• Size of class mark

• Size of frequency

• Size of interval

Sources of Data

• Primary

• Discrete

• Secondary

• Continuous

Give the condition for Symmteric Data

• Covariance is Zero

• Mean = Median = Mode

• Negatively Skewed

• Positively Skewed

Collection of data about all the units in the population

• Population Survey

• Census Survey

• Statistical

• Variable

Classification of data on the basis of Characteristics

• Attribute

• Chronological

• Variable

• Geograaphical

Arithmetic Mean is given by

• Addition of all the values and divide by total number of observation

• Addition of all the f.x and divide by total frequency

• Subraction of Values and multiply by total number of observation

• Add all the values