Applied-Probability-and-Statistics by WGU Actual Free Exam Q&As

Question 1

Regression R² = 0.64. Interpretation?

A. 64% chance of prediction B. Slope = 0.64 C. Correlation = 0.64 D. 64% of variation in Y explained by X

Discussion 0

Correct Answer: D Vote an answer

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Question 2

Boxplot shows:

A. Mean only B. Median, quartiles, outliers C. Variance D. Probability

Discussion 0

Correct Answer: B Vote an answer

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Question 3

Histogram is best for:

A. Continuous numerical data frequency B. Scatterplots C. Boxplots D. Categorical data

Discussion 0

Correct Answer: A Vote an answer

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Question 4

A study recorded the number of hours participants spent on exercise per week: 3 participants exercised for 1 hour, 6 participants exercised for 2 hours, 4 participants exercised for 3 hours, and 2 participants exercised for
4 hours.
Which type of graph would best represent the frequency of exercise hours?

A. A pie chart with slices representing the proportion of each exercise duration B. A scatterplot with points showing the relationship between exercise hours and fitness level C. A line graph with points connected to illustrate changes in exercise hours over time D. A bar chart with bars showing the number of participants for each exercise duration

Discussion 0

Correct Answer: D Vote an answer

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Question 5

A standard deck of 52 playing cards, 13 with hearts, 13 with diamonds, 13 with clovers, and 13 with spades, is shuffled, and one card is drawn at random.
What is the probability of drawing a heart?

A. 1/13 B. 1/4 C. 1/3 D. 1/2

Discussion 0

Correct Answer: B Vote an answer

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Question 6

A teacher plots the test scores of a class using the box plot.

What is true about the test scores?

A. The median score for Class A is 80 points. B. The median score for Class A is 70 points. C. The median score for Class A is 75 points. D. The median score for Class A is 88 points.

Discussion 0

Correct Answer: A Vote an answer

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Question 7

Standard deviation increases #

A. Variance decreases B. Data closer C. Data more spread out D. Mean increases

Discussion 0

Correct Answer: C Vote an answer

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Question 8

The average commute time for workers in a city in 2021 was 35 minutes, with a standard deviation of 5 minutes.
Assuming a normal distribution, which two values encompass 95% of the data?

A. 35 minutes and 40 minutes B. 20 minutes and 50 minutes C. 25 minutes and 45 minutes D. 30 minutes and 40 minutes

Discussion 0

Correct Answer: C Vote an answer

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Question 9

Review the following inequality:
y < x # 1/2
Which shaded portion in the graphs corresponds to this inequality?

A. Third graph B. Second graph C. Fourth graph D. First graph

Discussion 0

Correct Answer: C Vote an answer

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Question 10

In a game, a coin is tossed, and a spinner with 8 equal spaces numbered 1 through 8 is spun.
What is the probability of getting heads on the coin and a number less than 3 on the spinner?

A. 1/8 B. 3/8 C. 1/4 D. 1/2

Discussion 0

Correct Answer: A Vote an answer

WGU Applied Probability and Statistics (FZO1 C955) - Applied-Probability-and-Statistics Exam Practice Test