STATISTICS DAY QUIZ

The terminal classes are open, one cannot find?

• Mode

• Median

• Mean

• None of these

Average of two numbers is 20 and SD is 5. Find the two numbers

• (15,25)

• (30,40)

• (10,15)

• (12,15)

If Mean and SD of X are 50 and 5 respectively. Then mean and SD of (X-50)/5 is

• (1,0)

• (0,1)

• (1,2)

• (0,2)

When r=0, then Cov(X,Y) is equal to

• 0

• 1

• -1

• Any positivevalue

Which average is most affected by extreme value

• GM

• HM

• AM

• None of these

The method applied for obtaining regression line :

• Deviation method

• Rank method

• Least square

• None of these

If correlation coefficient between two variables is 0. The two lines of regression are :

• Parallel

• Perpendicular

• Coincide

• None of these

A distribution with a kurtosis less than 3 is known as

• Platykurtic

• Mesokurtic

• Leptokurtic

• Hyperkurtic

If the distribution is negatively skewed, then the:

• Mean is more than the Mode

• Median is at right to the Mode

• Mean is less than the Mode

• Mean is at right to the Median

If the data are skewed, which option of central tendency measure is the most unreliable indicator?

• Mean

• Median

• Range

• Mode