statistics test-1

The mean is :

• the difference of the values of all the observations divided by the total number of observations.

• the sum of the values of all the observations multiplied by the total number of observations.

• the sum of the values of all the observations divided by the total number of observations.

• none of them

Tags

CCSS.6.SP.B.5C

The mean is represented by:

• X_i

• f_i

•  $\sum_x^y$  fixi

•  $\overline{x}$  

Tags

CCSS.6.SP.B.5C

The Greek letter sigma means:

• average

• mean

• summation

• division

Tags

CCSS.6.SP.A.3

the formula for mean is:

• 
• 
• 
• 

Tags

CCSS.6.SP.B.5C

Four students who have obtained 40 marks would be considered in the class- interval:

• 25 - 40

• 40 -55

• both

• none

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The formula to calculate the class mark of any class-interval:

• 
• 
• 
• The sum of values of all the observations divided by the total number of observations.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

finding the mean using the formula  $\overline{x\ }\ \ =\frac{\sum_x^yfixi}{\sum_x^yfi}$  

• direct method

• assumed mean method

• step deviation method

• non

Tags

CCSS.6.SP.B.5C

the value x_i - a in the assumed mean method is :

• u_i

• d_i

• $\overline{x}$

• $\sum_x^yfi$

Tags

CCSS.6.SP.B.5C

The 'd_i' in assumed mean method is called:

• deviation

• direct method

• division

• dividend

finding the mean using this formula is:

• direct method

• assumed mean method

• step deviation method

• none

Tags

CCSS.6.SP.B.5C