CNR N4000: DR. CHELLY TUFTS BEVEL
NURSING PACKET PRACTICE
EXAMINATION 2026 QUESTIONS WITH
ANSWERS GRADED A+
◍ What is univariate analysis?.
Answer: Analysis involving one variable.
◍ What is probability?.
Answer: The likelihood that an event will occur, ranging from 0 to 1.
◍ What is the standard deviation of the sampling distribution?.
Answer: It is σ/√N, where σ is the population standard deviation and N is
the sample size.
◍ What is a one-tailed test of hypothesis?.
Answer: A test where the researcher's expectations are in one direction.
◍ 95%.
Answer: 2 standard deviations
◍ What does the normal curve represent?.
Answer: A unimodal, symmetrical distribution where most data falls in the
middle, with tails extending infinitely.
◍ total area under a curve.
Answer: 1 or 100%
◍ What is the interquartile range (IQR)?.
Answer: The distance between the 1st quartile (Q1) and the 3rd quartile
(Q3).
◍ What types of charts should be used for certain variable types?.
, Answer: Different chart types are used depending on the nature of the
variables being analyzed.
◍ What is big data?.
Answer: Data that contains greater variety, arriving in increasing volumes
and with more velocity.
◍ What is a Z-test used for?.
Answer: Testing the means of two large samples when population standard
deviations are known.
◍ frequency tables.
Answer: comparing outcomes between treatment and the control group
◍ What is the mode?.
Answer: The most frequent value in a dataset.
◍ small variance.
Answer: data is clustered and close to the mean
◍ What are the three major assumptions in hypothesis testing?.
Answer: 1. Level of measurement is interval-ratio; 2. Sampling distribution
is normal; 3. Independent random sampling.
◍ how to interpret a line graph.
Answer: title, x axis (independent variable), y axis (dependent variable),
data points have a corresponding value
◍ Casual Relationship.
Answer: one variable directly produces a change in another. Changing X
(treatment, IV, explanatory) causes Y (response, outcome, DV) tochange
◍ unit of analysis.
Answer: who or what is being studied and determines the level at which data
is collected and analyzedex: survey mayors on their town and what is within
answer= town as they are being asked about they town
◍ point estimate.
Answer: single number from a sample used to estimate a population
NURSING PACKET PRACTICE
EXAMINATION 2026 QUESTIONS WITH
ANSWERS GRADED A+
◍ What is univariate analysis?.
Answer: Analysis involving one variable.
◍ What is probability?.
Answer: The likelihood that an event will occur, ranging from 0 to 1.
◍ What is the standard deviation of the sampling distribution?.
Answer: It is σ/√N, where σ is the population standard deviation and N is
the sample size.
◍ What is a one-tailed test of hypothesis?.
Answer: A test where the researcher's expectations are in one direction.
◍ 95%.
Answer: 2 standard deviations
◍ What does the normal curve represent?.
Answer: A unimodal, symmetrical distribution where most data falls in the
middle, with tails extending infinitely.
◍ total area under a curve.
Answer: 1 or 100%
◍ What is the interquartile range (IQR)?.
Answer: The distance between the 1st quartile (Q1) and the 3rd quartile
(Q3).
◍ What types of charts should be used for certain variable types?.
, Answer: Different chart types are used depending on the nature of the
variables being analyzed.
◍ What is big data?.
Answer: Data that contains greater variety, arriving in increasing volumes
and with more velocity.
◍ What is a Z-test used for?.
Answer: Testing the means of two large samples when population standard
deviations are known.
◍ frequency tables.
Answer: comparing outcomes between treatment and the control group
◍ What is the mode?.
Answer: The most frequent value in a dataset.
◍ small variance.
Answer: data is clustered and close to the mean
◍ What are the three major assumptions in hypothesis testing?.
Answer: 1. Level of measurement is interval-ratio; 2. Sampling distribution
is normal; 3. Independent random sampling.
◍ how to interpret a line graph.
Answer: title, x axis (independent variable), y axis (dependent variable),
data points have a corresponding value
◍ Casual Relationship.
Answer: one variable directly produces a change in another. Changing X
(treatment, IV, explanatory) causes Y (response, outcome, DV) tochange
◍ unit of analysis.
Answer: who or what is being studied and determines the level at which data
is collected and analyzedex: survey mayors on their town and what is within
answer= town as they are being asked about they town
◍ point estimate.
Answer: single number from a sample used to estimate a population
