Fundamentals of Plant Biometry MCQ

1. Which of the following is NOT a basic assumption of normal distribution in plant biometry?
(A) The data is symmetrically distributed around the mean
(B) The distribution has a bell-shaped curve
(C) Data points are clustered around the median
(D) The variance of the data is constant across the range of values

2. In plant biometry, which of the following statistical methods is used to estimate the variability of a sample relative to its mean?
(A) Standard deviation
(B) Correlation coefficient
(C) Mode
(D) Median

3. Which of the following is the best method to test whether a given dataset follows a normal distribution?
(A) T-test
(B) Chi-square test
(C) Shapiro-Wilk test
(D) ANOVA

4. The coefficient of variation (CV) is used to:
(A) Measure the central tendency of a dataset
(B) Compare the variability of data between different datasets
(C) Calculate the correlation between two variables
(D) Identify the mode of a dataset

5. Which of the following methods is used for determining the degree of association between two variables in plant biometry?
(A) Regression analysis
(B) T-test
(C) Factor analysis
(D) Chi-square test

6. In a dataset, if the mean is 20, the median is 18, and the mode is 15, the distribution is likely to be:
(A) Symmetrical
(B) Skewed to the left
(C) Skewed to the right
(D) Uniform

7. In the context of plant biometry, which of the following is true about the standard error of the mean (SEM)?
(A) SEM is always larger than the standard deviation
(B) SEM is used to estimate the precision of the sample mean
(C) SEM is the same as the standard deviation
(D) SEM is used to test the hypothesis of the dataset

8. Which of the following is used to analyze the relationship between a dependent variable and multiple independent variables in plant biometry?
(A) Simple linear regression
(B) Multiple linear regression
(C) Pearson’s correlation
(D) Chi-square test

9. In biometry, when sampling a plant population, which of the following factors is most important for determining the sample size?
(A) The variability of the population
(B) The desired confidence level
(C) The margin of error
(D) All of the above

10. Which of the following is an appropriate graphical representation for showing the frequency distribution of plant height data?
(A) Pie chart
(B) Histogram
(C) Scatter plot
(D) Box plot

11. Which of the following is a measure of the symmetry of a distribution in plant biometry?
(A) Mean
(B) Skewness
(C) Kurtosis
(D) Variance

12. The purpose of using a control group in a plant experiment is to:
(A) Increase the sample size
(B) Establish a baseline for comparison
(C) Test the hypothesis
(D) Increase the statistical significance

13. If the correlation coefficient between two variables is 0.85, what does this indicate?
(A) There is no correlation between the variables
(B) There is a strong positive linear relationship between the variables
(C) There is a strong negative linear relationship between the variables
(D) The variables are perfectly correlated

14. Which of the following tests is used to determine whether the means of two groups are statistically different in plant biometry?
(A) Chi-square test
(B) T-test
(C) ANOVA
(D) Regression analysis

15. What does a p-value of 0.03 in a hypothesis test indicate?
(A) There is a 97% chance that the null hypothesis is true
(B) The result is statistically significant at the 5% significance level
(C) The alternative hypothesis is incorrect
(D) The null hypothesis should not be rejected