NLN NEX MATH PREP QUESTIONS & UPDATED ANSWERS ALL PASSED

NLN NEX MATH PREP QUESTIONS &
UPDATED ANSWERS ALL PASSED

Three groups of patients monitor their heart rates for two months to establish baseline data.
The table below displays the descriptive statistics of their heart rates. Which of the statements
is correct?

Group A. B. C.

Mean 85. 92. 64

median. 87. 91. 67

Range. 35. 28. 41

standard deviation 8. 6. 9



A. The variability of Group B is greater than the variability of Group C.

B. The variability of the groups is the same.

C. The variability of Group C is greater than the variability of Group A and Group B.

D. The variability of Group A is less than the variability of Group B. - CORRECT ANSWER C. The
variability of Group C is greater than the variability of Group A and Group B

Standard Deviation is a key statistic the describes variability of a data set.



31 is what percent of 84?

A.53%

B. 26.04%

C. 2.71%

D. 36.9% - CORRECT ANSWER D. 36.9%



375 is what percent of 125?

, A. 300%

B. 33.33%

C. 468.75%

D. 3% - CORRECT ANSWER A. 300%



Based on the data sets below, which of the following statements is true?



Data set 3. Data set 4

3. 5

9. 10

14. 13

17. 14

32. 18



A. The median for Data Set 4 is less than the median for Data Set 3.

B. The mean for Data set 4 is greater than the mean for Data Set 3.

C. The median for Data Set 3 is less than the median for Data Set 4.

D. The range for Data Set 3 is equal to the range for Data Set 4. - CORRECT ANSWER A.The
median for Data Set 4 is less than the median for Data Set 3



Of 60 patients treated with a certain medication, 24 showed no improvement. What percent of
patients improved?

A. 36%

B. 60%

C. 24%

D. 40% - CORRECT ANSWER B. 60%