Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace AGR 102 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book
Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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AGR 102

1 / 39

1. What are the three main size categories of soil particles?

A. Clay, sand, silt

B. Clay, silt, gravel

C. Silt, gravel, sand

D. Sand, gravel, rock

2 / 39

2. Which process involves the movement of water and nutrients from soil to plant roots?

A. Soil diffusion

B. Mass flow

C. Soil interception

D. Soil compaction

3 / 39

3. What does the correlation coefficient measure?

A. Proportional covariance

B. Variance

C. Mean

D. Covariance

4 / 39

4. What does the null hypothesis state in the context of the mean bean yield example?

A. The mean bean yield is equal to 10 quintales per manzana

B. The mean bean yield is less than 10 quintales per manzana

C. The mean bean yield is different from 10 quintales per manzana

D. The mean bean yield is greater than 10 quintales per manzana

5 / 39

5. What phase of soil is dominant in a typical soil profile?

A. Liquid

B. Gas

C. Organic

D. Solid

6 / 39

6. What is the logit in logistic regression?

A. The logarithm of the odds ratio

B. The inverse of the dependent variable

C. The sum of the independent variables

D. The natural logarithm of the dependent variable

7 / 39

7. What pH range is generally considered optimal for the availability of both macronutrients and micronutrients?

A. 5.5-7.0

B. 4.0-6.0

C. 3.5-5.0

D. 6.0-8.0

8 / 39

8. In a t-test, if the p-value is less than 0.05, what does it indicate?

A. Accept the null hypothesis

B. The result is not statistically significant

C. There is no significant difference

D. Reject the null hypothesis

9 / 39

9. Which type of farm implement is directly connected to and powered by the tractor?

A. Semi-mounted

B. Mounted

C. Pulled

D. Self-propelled

10 / 39

10. What is the main function of a hydraulic pump in a hydraulic system?

A. To store hydraulic fluid

B. To control the direction of fluid flow

C. To create the flow of the fluid medium

D. To filter the fluid

11 / 39

11. What type of soil structure is commonly found in arid or semi-arid regions and has rounded tops?

A. Columnar

B. Platy

C. Prismatic

D. Granular

12 / 39

12. What is the primary use of binary regression models?

A. To analyze continuous variables

B. To determine standard deviations

C. To explain the adoption of a new technology

D. To compute means

13 / 39

13. What is the definition of soil according to Brady?

A. The organic material found in the top layer of the earth.

B. The mineral particles found in the earth's crust.

C. The solid material on the earth's surface.

D. The unconsolidated material at or near the earth's surface with properties due to its proximity to the surface.

14 / 39

14. What is the term for wind-deposited soil?

A. Marine

B. Eolian

C. Lacustrine

D. Colluvium

15 / 39

15. What is the primary purpose of gear drives in farm machinery?

A. To provide lubrication

B. To store energy

C. To engage each other for motion transmission without shock, minimum wear, and noise

D. To create hydraulic power

16 / 39

16. What is the primary function of farm power in agricultural operations?

A. To directly perform the tasks

B. To serve as a decorative element on farms

C. To replace human labor entirely

D. To provide pull or force required to operate implements

17 / 39

17. Which statistical test is used to evaluate the difference between two means?

A. Regression test

B. One-sample t-test

C. Correlation test

D. Independent samples t-test

18 / 39

18. What type of valve in a hydraulic system controls the direction of fluid flow?

A. Pressure control valve

B. Spool valve

C. Check valve

D. Volume control valve

19 / 39

19. Which soil structure type consists of small, plate-like aggregates and is typically found in A or E horizons?

A. Columnar

B. Angular Blocky

C. Subangular Blocky

D. Platy

20 / 39

20. What type of belt is designed to mesh into splines and provide a positive drive?

A. Round belt

B. Vee-shaped belt

C. Flat belt

D. Timing belt

21 / 39

21. What does a significant positive correlation between two variables indicate?

A. There is no relationship between the variables

B. As one variable increases, the other also increases

C. As one variable increases, the other decreases

D. Both variables move independently

22 / 39

22. What is the function of cross-tabulation in statistical analysis?

A. To display frequency distribution of continuous variables

B. To generate joint frequency distribution of two categorical variables

C. To perform linear regression

D. To calculate means and standard deviations

23 / 39

23. What statistical method is used to explain the behavior of one variable through other variables?

A. Correlation analysis

B. Multiple linear regression

C. Binary regression

D. Descriptive statistics

24 / 39

24. In tractor implement control systems, what is the purpose of the auto-draft control?

A. To manually adjust the implement's position

B. To lift and keep the implement in a neutral position

C. To store implements when not in use

D. To maintain a pre-determined draft or force required by an implement

25 / 39

25. What is indicated by a soil's Munsell color notation?

A. Soil acidity and alkalinity

B. Soil drainage and organic material content

C. Soil texture

D. Soil structure

26 / 39

26. What is the simplest form of power transmission in farm machinery?

A. Belt and pulley drive

B. Shaft and universal joint drive

C. Gear drive

D. Hydraulic system

27 / 39

27. What is the term for the sum of exchangeable cations in soil?

A. Soil fertility

B. Soil texture

C. Soil solution

D. Cation exchange capacity (CEC)

28 / 39

28. What is a key assumption of the Ordinary Least Squares (OLS) regression?

A. The mean of errors is zero

B. All errors are correlated

C. The variance of errors is not constant

D. The dependent variable is categorical

29 / 39

29. What is the function of the PTO (Power Take Off) drive system on a tractor?

A. To transport the tractor to different locations

B. To attach the implement to the tractor

C. To provide auxiliary rotary power to implements requiring rotary movement

D. To increase the speed of the tractor

30 / 39

30. What does the term "soil profile" refer to?

A. A soil sample taken from the surface.

B. A vertical section of soil through multiple horizons.

C. A horizontal section of soil.

D. A chemical analysis of soil.

31 / 39

31. Which term refers to soil deposited by rivers?

A. Marine

B. Alluvium

C. Residium

D. Lacustrine

32 / 39

32. In regression analysis, what does the term 'error' represent?

A. Standard deviation

B. Explained variability

C. Unexplained variability

D. Mean difference

33 / 39

33. What is the range of values that a correlation coefficient can take?

A. 0 to 1

B. 0 to 2

C. -1 to 0

D. -1 to 1

34 / 39

34. What soil horizon is typically darker in color and can be mechanically disturbed?

A. B horizon

B. O horizon

C. A horizon

D. E horizon

35 / 39

35. In correlation analysis, what is the purpose of using the 'Bivariate' option in SPSS?

A. To analyze the correlation between two variables

B. To analyze a single variable

C. To generate descriptive statistics

D. To perform a frequency distribution

36 / 39

36. Which element of the hydraulic system converts fluid power into rotary motion?

A. Valve

B. Actuator

C. Motor

D. Pump

37 / 39

37. What does R-squared (R²) indicate in a regression model?

A. The standard error

B. The mean difference

C. The proportion of variance explained by the model

D. The correlation between variables

38 / 39

38. What is the typical range of soil pH?

A. 2.0 to 6.0

B. 1.5 to 12.0

C. 5.0 to 10.0

D. 4.0 to 9.5

39 / 39

39. What does the solid phase of soil mainly consist of?

A. Organic Matter

B. Water

C. Mineral soil

D. Air

Your score is

The average score is 38%

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