Question: Which road is steeper?
Answer: Road A
Question: Humans possess _________blank lumbar vertebrae.
Answer Choices:
five
twelve
seven
twenty-six
Answer: A — five
Question: The most inferior part of the sternum is the
Answer Choices:
manubrium.
body.
clavicle.
xiphoid process.
Answer: D — xiphoid process.
Question: What is a scatterplot and how does it help us?
Answer Choices:
A. A formula that fits a straight line.
B. A graph of paired (x, y) quantitative data that shows patterns.
C. A graph of qualitative data.
D. A table sorted least to greatest.
Answer: B. A scatterplot is a graph of paired (x, y) quantitative data. It provides a visual image of the data plotted as points, which helps show any patterns in the data.
Question: If r = 0, does that indicate there is no association between the two variables?
Answer Choices:
A. Yes, variables are completely unrelated.
B. No, r only measures direction.
C. No, variables are in perfect linear relationship.
D. No, there may be a non-linear relationship.
Answer: D. No, because while there is no linear correlation, there may be a relationship that is not linear.
Question: In this section we use r to denote the value of the linear correlation coefficient. Why do we refer to this correlation coefficient as being linear?
Answer Choices:
A. r measures fraction of points a straight line passes through.
B. r measures fit of line through averages.
C. r measures fraction of points best line passes through.
D. r measures how well a scatterplot fits a straight-line pattern.
Answer: D. The term linear refers to a straight line, and r measures how well a scatterplot fits a straight-line pattern.
Question: Explain why the selected ski run is steeper.
Answer Choices:
A. Ski run B’s ratio of vertical distance to horizontal distance is greater than Ski run A’s.
B. Ski run A’s ratio of vertical distance to horizontal distance is greater than Ski run B’s.
Answer: B. Ski run A’s ratio of vertical distance to horizontal distance is greater than Ski run B’s.
Question: Perform a unit analysis of the equation T = 451c + 50.
Answer Choices:
A. Units mismatch (credits vs dollars).
B. Units mismatch (dollars vs credits).
C. Units match (dollars on both sides).
D. Units match (credits on both sides).
Answer: C. The units of the expressions on both sides of the equation are dollars, which suggests that the equation is correct.
Question: Each cervical vertebra possesses a total of _________ blank foramina.
Answer Choices:
two
seven
twenty
three
Answer: A — two
Question: Which ski run is steeper?
Answer Choices:
Ski run A
Ski run B
Answer: Ski run A
Question: What does the ordered pair (2, 12) mean if n represents number of skateboarders (in millions) and t represents years since 2000?
Answer Choices:
A. In 2012, there were 2 million skateboarders.
B. In 2002, there were 12 million skateboarders.
C. In 1998, there were 12 million skateboarders.
Answer: B. In the year 2002, the number of skateboarders in the country was 12 million.
Question: Which of the following bones does not possess a sinus?
Answer Choices:
Nasal bone
Sphenoid bone
Frontal bone
Ethmoid bone
Answer: A — Nasal bone
Question: The adult vertebral column has four curvatures: the cervical, the thoracic, the lumbar, and the sacral. A baby is born without these curvatures. What can you conclude as to the reason why a newborn does not need these curvatures? Click the box(es) that assists in answering this question.
Answer Choices:
They don’t have to support their own weight.
They are not able to walk.
They are not able to move.
They are not able to hold their heads up.
Answer: A — They don’t have to support their own weight.
B — They are not able to walk.
D — They are not able to hold their heads up.