SOLUTION: Can someone please help me ASAP. I have in the process of relocating and have lost my book and this is my last test with no resources.
1. (2 pts) The objective of statistics is
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1. (2 pts) The objective of statistics is
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Question 200739: Can someone please help me ASAP. I have in the process of relocating and have lost my book and this is my last test with no resources.
1. (2 pts) The objective of statistics is best described as:
A) To make inferences about a sample based on information we get from a population
B) To make inferences about a population based on information we get from a sample taken from the population
C) To use population mean, as an estimate of the sample mean,
D) To make inferences about a sample with a high degree of reliability
2. (5 pts) Construct a frequency distribution of the ages that 30 randomly selected smokers started smoking:
25 26 25 17 16 16 14 17 21 16
15 18 17 15 15 19 16 17 23 15
19 17 16 26 16 25 16 17 22 24
14=1
15=4
16=7
17=6
18=1
19=2
21=1
22=1
23=1
24=1
25=3
26=2
3. (2 pts) Three-fourths of the numbers in any data set will be larger than the
A) third quartile B) fourth quartile C) median D) midrange
4. (2 pts) The number that appears most frequently in a data set is the
A) mean B) midrange C) median D) mode
5. (2 pts) Half of the scores in any data set are below the
A) first quartile B) second quartile C) third quartile D) median
6. (6 pts) Find the mean, median, and mode for the following set of data which shows the number of pages per article in a random sample of magazine articles.
6 7 5 4 7 5 5 7
8 5 3 6 8 9 5
7. (8 pts) Construct a histogram and a frequency polygon for the following frequency distribution
Miles Number of Commuters
Class Frequency
0 - 20 7
21 - 40 3
41 - 60 12
61 - 80 10
81 –100 4
(