ATI TEAS Math Practice Test

Correct Answer: C

Rationale: To calculate the average, add up all the scores (81 + 92 + 87 + 89 + 94 = 443) and divide by the total number of scores (5). 443 ÷ 5 = 88.6, which rounds to 89. Therefore, the approximate average of Pernell's scores is 89. Summary: - A (81) is incorrect as it is the lowest score. - B (84) is incorrect as it is not the exact average of the scores. - D (91) is incorrect as it is higher than the calculated average.

Correct Answer: C

Rationale: The correct answer is C because a graph representing a proportional relationship has a constant slope that is equal to the rate of change between the variables. In this case, a slope of 2,000 means that for every unit increase in x, there is a corresponding increase of 2,000 in y, indicating a proportional relationship. The y-intercept being 0 is also consistent with a proportional relationship as it implies that when x is 0, y is also 0. A, B, and D are incorrect because their slopes and y-intercepts do not represent a proportional relationship. A slope of 2,500, 1,500, and -1,800 in choices A, B, and D respectively, do not indicate a constant rate of change between x and y, which is crucial for a proportional relationship. The y-intercepts in these choices also do not align with the characteristics of a proportional relationship.

Correct Answer: B

Rationale: The correct answer is B: median. The median is the middle value when the data is arranged in numerical order. In this case, the outlier of 11 houses would significantly impact the mean, making it less accurate. The mode is not relevant for continuous data like the number of houses sold. The range only gives the difference between the maximum and minimum values, which does not provide a good measure of central tendency. Thus, the median is the best choice as it is not influenced by outliers and provides a more accurate representation of the typical number of houses sold per year.

Correct Answer: A

Rationale: The correct answer is A: 1/2. When flipping a fair coin, there are only two possible outcomes - heads or tails. Since each outcome is equally likely, the probability of getting heads is 1 out of 2, or 1/2. Choice B (1/3), C (1/4), and D (1/5) are incorrect because they do not accurately reflect the equally likely outcomes of a coin flip. The probability of getting heads is always 1/2 when flipping a fair coin.

Correct Answer: B

Rationale: To find the percentage of churchgoers attending Catholic Churches in Ellsford: 1. Calculate percentage attending Catholic Churches: (400/1450) * 100 ≈ 27.59% 2. Round to the nearest whole number: 28% Therefore, the correct answer is B (28%). Other choices are incorrect as they do not match the calculated percentage. A is lower, C and D are higher.