WGU C955 APPLIED PROBABILITY AND
STATISTICS FINAL CONCEPT REVIEW GUIDE
2026 REGRESSION AND PROBABILITY
DISTRIBUTIONS
◉ Which graph is the solution for y < 8?
A) {{ unfilled circle on 8, arrow pointing left }}
B) {{ filled circle on 8, arrow point left }}
C) {{ unfilled circle on 8, arrow pointing right }}
D) {{ filled circle on 8, arrow point right }}.
Answer: {{ unfilled circle on 8, arrow pointing left }}
◉ Which graph is the solution for 4y - 6 > 18?
A) {{ y > 4 }}
B) {{ y > 6 }}
C) {{ y < 4 }}
D) {{ y < 6 }}.
Answer: {{ y > 6 }}
◉ What is the correct line graph for y = 3x + 5?
A) (0,5) to (2,11)
,B) (0,-5) to (2,-11)
C) (0,3) to (2,5)
D) (0,3) to (2,-7).
Answer: (0,5) to (2,11)
◉ What is the correct line graph for y = -2x + 9?
A) (0,9) to (4.5,0)
B) (0,9) to (3,0)
C) (0,-9) to (5,-19)
D) (0,-9) to (5,-24).
Answer: (0,9) to (4.5,0)
◉ A normally distributed data set has a mean of 25 and a standard
deviation of 2.
Which percentage of the data falls between 23 and 25?
A) 34.0
B) 68.0
C) 95.0
D) 99.7.
Answer: 34.0
,◉ A given data set is normally distributed with a mean of 200 and a
standard deviation of 5.
Which two values does 95% of the data fall between?
A) 180-220
B) 185-225
C) 190-210
D) 195-235.
Answer: 190-210
◉ In a statistics class, 40 students are asked to write their age on a
piece of paper and place the paper in a box. After rotating and
shaking the box, 5 pieces of paper are drawn from the box at
random. The data results are as follows:
36
22
21
20
19
, What is the median for this data set?
A) 17
B) 21
C) 24
D) 28.
Answer: 21
◉ A new video gaming site wants to know what the median age is of
its adolescent population so they can focus on activities for these
clients. A data analyst recorded the ages of 12 adolescents who used
the site over a three-month period. The results are given below:
Age ,Frequency
13 ,1
16 ,2
17 ,2
18 ,3
19 ,4
What is the median age of the adolescents?
A) 17.0
STATISTICS FINAL CONCEPT REVIEW GUIDE
2026 REGRESSION AND PROBABILITY
DISTRIBUTIONS
◉ Which graph is the solution for y < 8?
A) {{ unfilled circle on 8, arrow pointing left }}
B) {{ filled circle on 8, arrow point left }}
C) {{ unfilled circle on 8, arrow pointing right }}
D) {{ filled circle on 8, arrow point right }}.
Answer: {{ unfilled circle on 8, arrow pointing left }}
◉ Which graph is the solution for 4y - 6 > 18?
A) {{ y > 4 }}
B) {{ y > 6 }}
C) {{ y < 4 }}
D) {{ y < 6 }}.
Answer: {{ y > 6 }}
◉ What is the correct line graph for y = 3x + 5?
A) (0,5) to (2,11)
,B) (0,-5) to (2,-11)
C) (0,3) to (2,5)
D) (0,3) to (2,-7).
Answer: (0,5) to (2,11)
◉ What is the correct line graph for y = -2x + 9?
A) (0,9) to (4.5,0)
B) (0,9) to (3,0)
C) (0,-9) to (5,-19)
D) (0,-9) to (5,-24).
Answer: (0,9) to (4.5,0)
◉ A normally distributed data set has a mean of 25 and a standard
deviation of 2.
Which percentage of the data falls between 23 and 25?
A) 34.0
B) 68.0
C) 95.0
D) 99.7.
Answer: 34.0
,◉ A given data set is normally distributed with a mean of 200 and a
standard deviation of 5.
Which two values does 95% of the data fall between?
A) 180-220
B) 185-225
C) 190-210
D) 195-235.
Answer: 190-210
◉ In a statistics class, 40 students are asked to write their age on a
piece of paper and place the paper in a box. After rotating and
shaking the box, 5 pieces of paper are drawn from the box at
random. The data results are as follows:
36
22
21
20
19
, What is the median for this data set?
A) 17
B) 21
C) 24
D) 28.
Answer: 21
◉ A new video gaming site wants to know what the median age is of
its adolescent population so they can focus on activities for these
clients. A data analyst recorded the ages of 12 adolescents who used
the site over a three-month period. The results are given below:
Age ,Frequency
13 ,1
16 ,2
17 ,2
18 ,3
19 ,4
What is the median age of the adolescents?
A) 17.0
