Question 1

Which of the following numbers has exactly three significant figures?

Accepted Answer

0.00682

Question 2

When rounding the number $$2.45 	imes 10^2$ to two significant figures using the lab's arbitrary rule, what is the correct result?

Accepted Answer

$$2.4 	imes 10^2$

Question 3

A lab protocol requires you to weigh out 2.834 grams of NaCl, but you need four times as much. How many grams should you weigh out, and how many significant figures should your answer have?

Accepted Answer

11.34 grams, 4 significant figures

Question 4

A product specification requires impurity levels to be less than or equal to 0.02%. If a batch has 0.024% impurities, does it meet the specification after rounding to the correct number of significant figures?

Accepted Answer

Yes, because 0.024% rounds to 0.02%

Question 5

Which type of graph is most appropriate for displaying the number of students with birthdays in each month?

Accepted Answer

Bar graph

Question 6

What is the main advantage of using semi-log paper to plot exponential data, such as $$y = 2^x$$?

Accepted Answer

It transforms exponential curves into straight lines, making trends easier to interpret

Question 7

Which of the following best describes logistic population growth?

Accepted Answer

Population growth that accelerates, then slows as it approaches a carrying capacity

Question 8

In simple linear regression, which equation best represents the relationship between the dependent variable $$y$$ and the independent variable $$x$$?

Accepted Answer

$$y = mx + b$$

Question 9

A researcher wants to predict plant growth based on both sunlight and water availability. Which statistical method should they use?

Accepted Answer

Multiple linear regression

Question 10

Which of the following statements about correlation and causation is correct?

Accepted Answer

Correlation does not imply causation

Question 11

Which of the following is a correct example of a dependent variable in a regression analysis studying the effect of fertilizer and sunlight on plant height?

Accepted Answer

Plant height

Question 12

Which of the following best describes the difference between a line graph and a bar graph?

Accepted Answer

A line graph shows changes over a continuous range, while a bar graph compares discrete categories

Question 13

Which of the following is the correct order of taxonomic categories from broadest to most specific?

Accepted Answer

Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 14

Which taxonomic category is used to describe only slight variations within a species?

Accepted Answer

Form

Question 15

A botanist identifies a plant as Xanthidium cristatum var. scobiculatum f. papillatum. What does 'var.' indicate in this name?

Accepted Answer

Variety, a rank below species indicating a distinct population with minor differences

Question 16

Which of the following best explains why a semi-log plot is useful for visualizing bacterial population growth?

Accepted Answer

It linearizes exponential growth, making it easier to interpret rates of change

Question 17

If a scatter plot of two variables shows a strong linear relationship, what can be inferred?

Accepted Answer

There is a strong correlation between the variables

Question 18

Which of the following is an example of a plausible but incorrect interpretation of a correlation between ice cream sales and sunburn rates?

Accepted Answer

Eating ice cream causes sunburn

Question 19

Which of the following best describes the role of a 'cultivar' in plant taxonomy?

Accepted Answer

A cultivar is the result of crossing over several generations and does not occur naturally

Question 20

A scientist is analyzing the relationship between rainfall (X) and soil erosion (Y) using simple linear regression. Which of the following is the correct formula for the regression line?

Accepted Answer

$$Y = a + bX$$

L 1.3: Lab Math and Graphing for Biology: Foundations for Data Analysis and Taxonomy

Study Guide - Practice Questions

Study Guide - Flashcards