Class-7 - Maths - Chapter-3 - Data Handling

The arithmetic mean of first five natural numbers is

• 3

• 4

• 5

• 6

If arithmetic mean of 6 . 8 , 5 , 7 , x and 4 is 7 , then x is

• 12

• 6

• 8

• 4

The arithmetic mean of first ten natural numbers is

• 5.5

• 6

• 7.5

• 10

The weight (in kg) of 5 mean are 62 , 65 , 69 , 66 , 61 . The median is

• 45 kg

• 66 kg

• 65 kg

• 55 kg

If in a data , 10 numbers arranged in increasing order . If the 7th entry is increased by 4 , then the median increases by

• zero

• 4

• 6

• 5

The mean of x , x+3 , x+6 , x+9 and x+12 is

• x+6

• x+3

• x+9

• x+12

20 years ago, when my parents got married, their average age was 23 years, now the average age of my family, consisting of myself and my parents only is 34 years. My present age is

• 34 years

• 19 years

• 42 years

• 16 years

The daily sale of kerosene (in liters) in a ration shop for six days is as follows :

75, 120, 12, 50, 70.5 and 140.5

The average daily sale is

• 150

• 10

• 142

• 78

The mean of five numbers is 27. If one of the numbers is excluded the mean gets reduced by 2. The excluded number is

• 35

• 27

• 25

• 40

The median of the following data

46, 64, 87, 41, 58, 77, 35, 90, 55, 33, 92 is

• 77

• 60.2

• 58

• 87