Measures of Central Tendency
The mean of this data set:
5, 6, 7, 8, 9
What is 7?
The MAD of this data set if the mean is 1:
1, 2, 0
What is 0.67?
A seventh-grade student chooses a random sample of 50 out of 400 students. He finds that 7 students have traveled outside the United States. Based on this information, predict how many students have traveled outside of the United States.
What is 56 students?
The IQR of this data set:
1, 2, 3, 5, 6, 8, 11
What is 6?
The median of this data set:
12, 17, 19, 11, 19, 2
What is 14.5?
The MAD of this data set if the mean is 9:
5, 7, 13, 14, 6
What is 3.6?
A metal-fabricating company produces 150,000 souvenir tokens each year. In a random sample of 400 tokens, 3 have stamping errors. Predict the total number of coins that will have stamping errors in a year.
What is 1,125?
The IQR of this data set:
29, 15, 58, 22, 75, 16, 64
What is 48?
The mean of this data set:
55, 23, 43, 60, 35, 78, 78
What is 53.1?
The MAD of this data set if the mean is 3:
3, 5, 1, 0, 4, 5
What is 1.6?
Herald is keeping track of eagles. To do so, he put tags on 25 eagles and released them. Later, he catches 120 eagles; 16 eagles were tagged. Find the best estimate for the Eagle population?
What is approximately 188?
The IQR of this data set:
45, 17, 39, 1, 4, 16
What is 35?
The median of this data set:
6.4, 7.2, 5.6, 4.4
What is 6?
The MAD of this data set:
9, 4, 6, 5
What is 1.5?
A poll revealed that 35 of 72 people would prefer the color purple to blue. What percent of people prefer the color blue?
What is 51.3%?
The IQR of this data set:
63, 45, 21, 14, 7, 3, 1
What is 42?
The mean of this data set:
6.9, 3.3, 2.5, 7.8, 3.3, 5.6
What is 4.9?
The MAD of this data set:
7, 4, 3, 1, 0, 3
What is 1.67?
Veterinary doctors marked 30 deer and released them. Later on, they counted 150 deer, 12 of which had marks. To the nearest whole number, what is the best estimate for the deer population?
What is 375?
The IQR of this data set:
8, 5, 6, 16, 22, 13, 24, 2
What is 13.5?