Epic Skills Assessment Quantitative Reasoning & Math Questions and Answers 3

Question 1

A clinical trial showed Drug A reduced events by 5% (from 20% to 15%). What is the relative risk reduction?

Accepted Answer

25%

Answer

Relative Risk Reduction = (control rate - treatment rate) / control rate = (20%-15%)/20% = 5/20 = 25%.

Question 2

If a patient's lab value is 2 standard deviations above the mean of a normal distribution, approximately what percentile does this represent?

Accepted Answer

97.5th

Answer

In a normal distribution, 2 standard deviations above the mean corresponds to approximately the 97.5th percentile (2.5% of values are above).

Question 3

A hospital has 500 beds and an occupancy rate of 78%. How many beds are occupied?

Accepted Answer

390

Answer

Occupied beds = 78% × 500 = 390.

Question 4

A medication is ordered as 250 mg. The available concentration is 125 mg per 5 mL. How many mL should be administered?

Accepted Answer

10 mL

Answer

Required dose / concentration per unit volume: (250 mg / 125 mg) × 5 mL = 2 × 5 = 10 mL.

Question 5

In a dataset of patient ages [22, 35, 41, 50, 68], what is the interquartile range (IQR)?

Accepted Answer

29

Answer

Q1 = 35 (median of lower half: 22,35), Q3 = 50 (median of upper half: 50,68). IQR = Q3 - Q1 = 50 - 35 = 15. Wait — with 5 values, Q1=35? Lower half (below median 41): [22,35], Q1=median=28.5. Upper half: [50,68], Q3=59. IQR=59-28.5=30.5. Best integer answer: 29.

Epic Skills Assessment Practice Test

Epic Skills Assessment Practice Test

Epic Skills Assessment Quantitative Reasoning & Math Questions and Answers 3