Q1/ The table below gives the number of accidents each year at a particular road junction : 2000 2001 2002 2003 2004 2005 2006 2007 2 4 3 4 Find the mean , median, mode, standard deviation, and coefficient of variation?
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.
![Q1/ The table below gives the number of accidents each year at a particular road
junction :
2000
2001
2002
2003
2004
2005
2006
2007
5
4
9
4
Find the mean, median, mode, standard deviation, and coefficient of variation?
Q2/ Four engineering classes A,B,C and, D were tested for the percentage of students
failed in the examination of Engineering Mechanics Subject measured from each one
of them. The following table gives the number of students in each class and
percentage of students failed collected from each class. Compute the followings:
Class
A
D
Number of students in each class
20
30
25
25
Percentages of students failed in
each class
24%
38%
45%
42%
1-Total percentage of observed failed students ?.
2- If a certain class is tested randomly, compute the probability that it is taken from
class B and C ?
Q3/
1-A study stage of (30) students, find the how many for projects group that come out
of (3) students?
2-Of 10 light bulbs, 3 are defective. Five bulbs are chosen at random.
Use the rules of probability to find the probability that none are defective?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe0009e72-0100-47c3-8cf9-e50b1365ebdb%2F4d13f30e-6863-4187-a3ed-fae95baf248d%2Fm9lbntq_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Step by step
Solved in 4 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Glencoe Algebra 1, Student Edition, 9780079039897…](https://www.bartleby.com/isbn_cover_images/9780079039897/9780079039897_smallCoverImage.jpg)
![Big Ideas Math A Bridge To Success Algebra 1: Stu…](https://www.bartleby.com/isbn_cover_images/9781680331141/9781680331141_smallCoverImage.jpg)
![Glencoe Algebra 1, Student Edition, 9780079039897…](https://www.bartleby.com/isbn_cover_images/9780079039897/9780079039897_smallCoverImage.jpg)
![Big Ideas Math A Bridge To Success Algebra 1: Stu…](https://www.bartleby.com/isbn_cover_images/9781680331141/9781680331141_smallCoverImage.jpg)