Statistics ( Grade 7 )

Match each one to its correct rule:                                   

• 1 – b ...... 2 – c ...... 3 - a

• 1 – a ...... 2 – b ...... 3 - c

• 1 – a ...... 2 – c ...... 3 - b

• 1 – c ...... 2 – b ...... 3 - a

300 families were asked about the number of cars each family have.

The population of this study is:

• 300 cars

• 300 families

• Number of cars

• 1 family

300 families were asked about the number of cars each family have.

The character of this study is:

• 300 cars

• 300 families

• Number of cars

• 1 family

In a statistical study, the total relative frequency as percentage is always:

• 1

• 50

• 100

• 360

In a statistical study, the total central angles is always:

• 1

• 50

• 100

• 360

In a statistical study, the total relative frequency is always:

• 1

• 50

• 100

• 360

The following statistical table represents the number of cars in a sample of 300 families.

The number x is:

• 1

• 100

• 123

• 125

The following statistical table represents the number of cars in a sample of 300 families.

The number of families having no cars is:

• 0

• 12

• 24

• 27

The following statistical table represents the number of cars in a sample of 300 families.

The number of families having greater than 2 cars is:

• 39

• 27

• 12

• 153

The following statistical table represents the number of cars in a sample of 300 families.

The percentage of families having 3 cars is:

• 0.09 %

• 9 %

• 32.4 %

• 100 %