Nov. 14-17

Grade 7 Problem of the Week Nov. 14-17

1. Here are the masses of 10 dogs: 25 kg, 30 kg, 30 kg, 25 kg, 60 kg, 25 kg, 25 kg, 30 kg, 20 kg, 20 kg

a) Calculate the mode, mean, and median for the mass of the dogs.

b) Identify the outlier

c) What effect does the outlier have on the mean? Explain how it will change and why.

2. Find the median and range from the math test scores

55, 45, 62, 71, 66, 67, 91, 79, 58, 47, 79, 82, 88, 98, 77

3. During one week in June, the daily rainfall amounts in Weymouth were

5 mm, 4 mm, 21 mm, 6 mm, 3 mm, 7mm, 3 mm

a) Calculate the mode, mean, and median,  for the daily rainfall amounts.

b) Identify the outlier.

c) What effect does the outlier have on the mean? Explain how it will change and why.

4. There are 5 numbers in a set of data. The modes are 13 and 19. The median is 19. The mean is 17. What are the 5 numbers?