What is the probability of an impossible event?

• 1/2

• 1

• 0

• 100

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

Tags

CCSS.HSS.CP.A.1

A set of drivers were asked about the number of accidents made in one year. Their answers were abbreviated in the following table:

The mean (average) number of accidents is performed by a driver is:

• 1.5

• 2

• 2.5

• 1

The five grades of a student over 20 are: 10 ; 12 ; 13 ; 16 and 19. The average grade is:

• 13

• 14

• 14.5

• 15

The median of the data 4,6,8,9,11 is

• 6

• 8

• 9

• 11

The ratio of the sum of observations and the total number of observation is called

• Mean

• Median

• Mode

• Central tendency

The mean of x+2, x+3,x+4 and x-2 is

• (x+7)/4

• (2x+7)/4

• (3x+7)/4

• (4x+7)/4

The class marks of a frquency distribution are given as follows:

15,20,25......

The class corresponding to class mark 15 is

• 12.5-17.5

• 17.5-22.5

• 18.5-21.5

• 19.5-20.5

What is the surface area of the cylinder to the nearest square inch? 

• 625 in²
• 1300 in²
• 1046 in²
• 414 in²

Tags

CCSS.7.G.B.6

Volume = ?

• 150.72 mm³
• 904.32 mm³
• 2,712.96 mm³
• 782 mm³

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3