Q1:

1- 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

2- Calculate the mean, median, and mode, then calculate the coefficient of variation.

3- 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 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:

1. P (X

2. 2. P (X? 185)

3. P (179 ? X ? 182)

Q3: This question measures the applied skills of the student (b1)

A- Explain the relationship between the two variables.

B- Find the equation of the yield regression line over the amount of fertilizer.

C- What is your expectation of the crop size if the trees were fertilized with an amount of 9 kg of fertilizer.