Averages

A scientist records the growth of a plant over 5 weeks, measuring heights of 12 cm, 15 cm, 13 cm, 14 cm, and 11 cm. What is the average weekly growth?

• 13 cm

• 12.5 cm

• 13.5 cm

• 14 cm

A scientist records the growth of a plant over five days as 5 cm, 7 cm, 6 cm, 8 cm, and 4 cm. What is the average daily growth?

• 6 cm

• 5 cm

• 7 cm

• 6.5 cm

A scientist measures the height of five different plant species: 10 cm, 12 cm, 8 cm, 15 cm, and 11 cm. What is the average height of these plants?

• 11.2 cm

• 10 cm

• 12 cm

• 13 cm

A scientist records the mass of four identical metal samples: 50 g, 48 g, 52 g, and 50 g. What is the average mass?

• 50 g

• 49 g

• 51 g

• 52 g

A research lab measures the growth of a bacterial culture over four weeks, recording increases of 20,000, 25,000, 18,000, and 22,000 cells. What is the average weekly growth?

• 21,250 cells

• 20,000 cells

• 23,000 cells

• 19,500 cells

A scientist records the temperature of a solution over five days as 25°C, 28°C, 26°C, 29°C, and 27°C. What is the average temperature of the solution?

• 27°C

• 26°C

• 28°C

• 25°C

A scientist measures the growth rate of five different plants in a controlled environment. The growth rates are 10 cm/day, 12 cm/day, 15 cm/day, 8 cm/day, and 11 cm/day. What is the average growth rate?

• 11 cm/day

• 10 cm/day

• 12 cm/day

• 13 cm/day

A research lab's monthly electricity consumption (in kWh) for six months is 150, 180, 160, 170, 140, and 190. What is the average monthly electricity consumption?

• 165 kWh

• 160 kWh

• 175 kWh

• 155 kWh

A scientist records the growth of a plant over six weeks with measurements of 80 cm, 75 cm, 90 cm, 85 cm, 70 cm, and 95 cm. What is the average growth per week?

• 82.5 cm

• 80 cm

• 85 cm

• 78.5 cm

A scientist measures the growth of a plant every day: 10 cm, 20 cm, 40 cm, 80 cm, and 160 cm. What is the average growth per day?

• 50 cm

• 62 cm

• 82 cm

• 102 cm