Average of Data

After the 3 quizzes, a student’s average grade was 78. In order to get an average of 82, the grade on the fourth quiz must be at least ………..

• 91

• 90

• 94

• 96

Tags

CCSS.7.NS.A.3

Mandy earns money by delivering groceries. She earned $4 on Monday, $7 on Tuesday, $5 on Wednesday, $4 on Thursday, and $5 on Friday. What is the average amount of money Mandy earned per day?

• 3

• 4

• 5

• 6

Tags

CCSS.3.OA.D.8

Clayton plays basketball on a team. He has played three games so far. In the first game, he scored 10 points. In the second game, he scored 14 points. In the third game, he scored 6 points. What is Clayton’s average points per game?

• 10

• 11

• 12

• 13

Jean loves to go bird watching. One day, she saw 7 birds. The next day, she saw 11 birds. The next day, she saw no birds. What is the average number of birds Jean saw each day?

• 3

• 4

• 5

• 6

Harley read 5 books in January, 8 books in February, 4 books in March, and 7 books in April. What is the average number of books Harley read per month?

• 3

• 4

• 5

• 6

Tags

CCSS.3.OA.D.8

The ratio of three numbers A, B and C is 1 : 2 : 3. The average of these three numbers is 48. What is the number of B?

• 24

• 96

• 48

• 144

In a set of three numbers, the average of first two numbers is 2, the average of last two numbers is 3, and the average of the first and the last numbers is 4. What is the average of three numbers?

• 2

• 2.5

• 3

• 3.5

Tags

CCSS.7.EE.B.3

The average weight of five cars A, B, C, D and E is 200 kg. If the average weight of cars A, B and C is 198 kg, while the average weight of cars C, D and E is 203 kg, what is the weight of car C, in kg?

• 202

• 203

• 204

• 205

40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is Rs. 390. The annual income of each executive is Es. 420. What is the average annual income of all the employees in the factory together?

• 390

• 405

• 408

• 415

The scores of a student in his term exam are: 78 points for Chinese, 83 points for Nature, 81 points for History and his Math mark is 1 point more than the average point of all these 4 subjects. What is the Math mark of this student?

• 81

• 80

• 83

• 82

Tags

CCSS.7.EE.B.3