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- 1. Multiple Choice
What is a population?
Everyone in the group you are researching
A survey of everyone in the group you are researching
A part of the group you are researching
A survey of part of the group you are researching
- 2. Multiple Choice
What is a sample?
Everyone in the group you are researching
A survey of everyone in the group you are researching
A part of the group you are researching
A survey of part of the group you are researching
- 3. Multiple Choice
A _______________ is a characteristic of a population, and a __________ is a characteristic of a sample.
statistic; parameter
sample, population
parameter; statistic
none of the above
- 4. Multiple Choice
The science of collecting, organizing, analyzing and interpreting data in order to make decisions is called ___________
Data
Statistics
Variance
Deviation
- 5. Multiple Choice
Identify the population and the sample:
Mr. I randomly selected 15 seniors to find out if Chrome books in the classroom help learning.
Population: Mr I; Sample: the 15 seniors selected
Population: the 15 seniors selected; Sample: the students who think Chrome books don't help learning
Population: all seniors at CHS; Sample: the 15 seniors selected
Populations: the 15 seniors selected; Sample: all seniors at CHS
- 6. Multiple Choice
Statistic or parameter?
The average age of a high school senior in HC is 17 years and 4 months (based on all seniors in Hamilton County area)
statistic
parameter
not enough information
- 7. Multiple Choice
Statistic or parameter?
The average age of a high school senior in HC is 17 years and 4 months (based on all seniors at Central HS)
statistic
parameter
not enough information
- 8. Multiple Choice
Statistic or parameter?
The average age of a high school senior is 17 years and 4 months
statistic
parameter
not enough information
- 9. Multiple Choice
According to the portion of the frequency table given, how many people have an MBA?
9
60
20
- 10. Multiple Choice
Which is the best estimate of how many total people took the survey based on the frequency distribution?
50
150
100
200
- 11. Multiple Choice
What is the class width of the histogram?
4
5
Cannot determine
- 12. Multiple Choice
Which is the BEST approximation for the number of trees in this orchard?
53
100
45
cannot determine
- 13. Multiple Choice
What percentage of these trees are 5 - 9 feet tall?
19%
31%
22%
10%
- 14. Multiple Choice
What percentage of people said Batman was their favourite?
13%
11%
26%
18%
- 15. Multiple Choice
How do you calculate the class width if you have a data set with a range of 70 and you are asked to construct a 6 class frequency distribution?
I divide 70/6=11.66666, I round it up to 12; the class width is 12.
I divide 6/70=0.875, I round it up to 9; the class width is 9.
As there are 70 entries, each class width is 6.
I choose a class width of 10 because it looks fine.
- 16. Multiple Choice
This is the interval between two consecutive upper (or lower) class limits.
class boundaries
midpoints
class width
frequency
- 17. Multiple Choice
Why is this frequency distribution incorrect? Choose the BEST answer.
There is a zero.
Classes should overlapped.
The fourth class width is different from the others
- 18. Multiple Choice
Use the given minimum and maximum data entries, and the number of classes, to find the class width, the lower class limits, and the upper class limits.
minimum = 8, maximum = 72, 6 classes
The class width is _______ . Choose the correct lower class limits below.
Class width = 11
18, 29, 41, 51, 62, 73
Class width = 11
19, 29, 41, 52, 63, 73
Class width = 11
8, 19, 30, 41, 52, 63
Class width = 11
8, 18, 30, 40, 51, 63
- 19. Multiple Choice
Use the frequency histogram to answer each question.
Determine the number of classes.
5
6
7
8
- 20. Multiple Choice
Which class has the highest frequency?
1
2
3
4
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