Elevation above sea level and temperature are negatively-correlated variables. Which of the following statement describes the relationship between the variables?
A. As elevation decreases, temperature remains the same
B. As elevation decreases, temperature decreases
C. As elevation increases, temperature decreases
D. As elevation increases, temperature increases
In a negatively-correlated variables, a change in one variable result in opposite change in the other variable. In other words, an increase in on variable results in a decrease in the other.
Now let’s analyze the given scenarios:
As elevation decreases, temperature remains the same this is NO-CORRELATION
As elevation decreases, temperature decreases is a POSITIVE CORRELATION
As elevation increases, temperature decreases is a NEGATIVE CORRELATION
As elevation increases, temperature increases is a POSITIVE CORRELATION
Therefore, the Correct Answer is C.
More Questions on TEAS 7 Math
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Q #1: Which of the following expressions represents the sum of three times a number and eight times a different number?
A. 3x+8y
B. 8x+3x
C. 3x-8y
D. 8x-3y
Answer Explanation
Let two numbers be x and y. Then
Three time a number=3x
Eight times a different number = 8y
Sum of the two is 3x+8y
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Q #2: What is the least common denominator for the fractions below? (Round the answer to the nearest integer) 1/2, 2/3, 4/5
A. 30
B. 25
C. 7
D. 19
Answer Explanation
We determine least common denominator (LCD) using prime factorization of denominators as follows
2=1*2
3=1*3
5=1*5
Thus, LCD of 2, 3, 5 = 2*3*5=30
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Q #3: There are 800 students enrolled in four allied health programs at a local community college. The percentage of students in each program is displayed in the pie chart. Which of the following is the number of students enrolled in the respiratory care program?
A. 336
B. 152
C. 144
D. 168
Answer Explanation
100% represents total students four allied health program. Thus, 100%=800 students, and 19% joins respiratory care program is
Thus, 152 students joined the respiratory care program.
