If you know that it is the lengths of a group of students, it follows a normal distribution with an arithmetic mean of 170 cm and a deflection 5 cm standard, one of the guys was randomly selected (X) Find from the following using the Z tables: P (X< 174) P (X≥ 185) P (179 ≤ X ≤ 182)
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:
- Complete the following frequency table:
|
Production In liters |
Number Farmer ? |
center Category ? |
Repetition Cumulative |
?. ? |
|
149 -100 |
5 |
|
|
|
|
199 -150 |
5 |
|
|
|
|
249 -200 |
8 |
|
|
|
|
299 -250 |
4 |
|
|
|
|
349 -300 |
2 |
|
|
|
|
Total |
24 |
|
|
|
- Calculate the
mean ,median andmode , then calculate the coefficient of variation.
- Examples data by the recurring curve method.
Question2: The question measures the mental skills that the student acquired (c1)
If you know that it is the lengths of a group of students, it follows a
- P (X< 174)
- P (X≥ 185)
- P (179 ≤ X ≤ 182)
Q3: This question measures the applied skills of the student (b1)
- Explain the relationship between the two variables.
- Find the equation of the yield regression line over the amount of fertilizer.
- What is your expectation of the crop size if the trees were fertilized with an amount of 9 kg of fertilizer?
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