Use the Oregon COVID data to answer the questions below: Date Total cases 3/1/20 1 3/10/20 15 3/20/20 114 3/31/20 690 4/1/20 736 4/10/20 1,371 4/20/20 1,956 4/30/20 2,510 5/1/20 2,579 5/10/20 3,228 5/20/20 3,801 5/31/20 4,243 6/1/20 4,302 6/10/20 5,060 6/20/20 6,750 6/30/20 8,656 7/1/20 8,931 7/10/20 11,454 7/20/20 14,847 7/31/20 18,493 8/1/20 18,817 8/10/20 21,488 8/20/20 24,165 8/31/20 26,713 9/1/20 26,946 9/10/20 28,654 9/20/20 30,801 9/30/20 33,509 a. As of April 13, there worldwide total of confirmed cases of COVID-19 was 1,912,923. Approximately what percent of the world cases were from Oregon? b. Describe the change in number of confirmed cases from 9/20 to 9/30 in two different ways. This should involve two separate calculations and sentence answers. Way 1: Way2:
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Use the Oregon COVID data to answer the questions below:
|
Date |
Total cases |
|
3/1/20 |
1 |
|
3/10/20 |
15 |
|
3/20/20 |
114 |
|
3/31/20 |
690 |
|
4/1/20 |
736 |
|
4/10/20 |
1,371 |
|
4/20/20 |
1,956 |
|
4/30/20 |
2,510 |
|
5/1/20 |
2,579 |
|
5/10/20 |
3,228 |
|
5/20/20 |
3,801 |
|
5/31/20 |
4,243 |
|
6/1/20 |
4,302 |
|
6/10/20 |
5,060 |
|
6/20/20 |
6,750 |
|
6/30/20 |
8,656 |
|
7/1/20 |
8,931 |
|
7/10/20 |
11,454 |
|
7/20/20 |
14,847 |
|
7/31/20 |
18,493 |
|
8/1/20 |
18,817 |
|
8/10/20 |
21,488 |
|
8/20/20 |
24,165 |
|
8/31/20 |
26,713 |
|
9/1/20 |
26,946 |
|
9/10/20 |
28,654 |
|
9/20/20 |
30,801 |
|
9/30/20 |
33,509 |
a. As of April 13, there worldwide total of confirmed cases of COVID-19 was 1,912,923. Approximately what percent of the world cases were from Oregon?
b. Describe the change in number of confirmed cases from 9/20 to 9/30 in two different ways. This should involve two separate calculations and sentence answers.
Way 1:
Way2:
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