NR716 Week 7 Quiz Statistics
NR716 Week 7 Quiz Statistics
Purpose
The purpose of this quiz is for you to demonstrate application of knowledge of descriptive, parametric, and non-parametric statistics.
Instructions
Take the quiz assigned for this week. The quiz is locked until Day 1 of Week 7. You may take the quiz anytime during this week.
- Attempts: 2
- The highest score will be recorded in the gradebook. If you are satisfied with your score on the first attempt, there is no need to retake the quiz a second time.
- Questions: All quiz questions come directly from the course content.
- Time Limit: None
- While there is no time limit to complete the quiz, we suggest you allow 30 minutes of uninterrupted time to complete the quiz.
- Respondus Lockdown Browser: Not required
- You may use your resources while taking the quiz.
Question 1
8 / 8 pts
Which of the following is considered a continuous variable?
The genders of students in this class
The total number of students in this class
The hair colors of students in this class
The healthcare specialty of students in the class
Question 2
8 / 8 pts
The findings from your DNP project include the weights of your patients that you measured before and after the evidence-based project. You understand you have ___________ data and will use ____________as a statistical measure.
Continuous data; p values
Discrete; percentage
Discrete; median
Continuous; means
Question 3
8 / 8 pts
Which of the following variables is considered to be a discrete variable?
The height of the patients
The blood pressure of the patients
The temperature of the patients
The gender of the patients
Question 4
8 / 8 pts
Which of the following is the least useful in understanding how varied your data scores are?
Standard deviation
Variance
Mean
Range
Question 5
8 / 8 pts
Using the interactive statistical flowchart, please select the term that is described by data that is unconnected and distinct and separate. The level of measurement is nominal and ordinal. Some examples are first or second place in a horse race or in a high school class rating, or numbers of children born in a family. Some other examples are married and not married, high school graduate or not a graduate.
Monodicotoumous data
Discrete data
Measured data
Random sampled data
Question 6
8 / 8 pts
Using the interactive statistical flowchart, which of these is an assumption for the Spearman’s Rank Correlation test?
The data must be parametric data
The data must be normally distributed
The data is at least ordinal data
The variables are categorical or nominal data
Question 7
8 / 8 pts
Which of these is not one of the three measures of central tendency?
Median
Standard deviation
Mode
Mean
Question 8
8 / 8 pts
How will the removal of the lowest numbers in the data collected affect the mean (average) of the data?
The mean may decrease
The mean may increase
The mean will stay the same
It is not possible to calculate the mean in this example
Question 9
8 / 8 pts
Which option is an example of categorical or discrete data?
Blood pressure data
A1C data
Marriage status (married or not married)
Temperature
Question 10
8 / 8 pts
The DNP student is conducting data collection at the end of the implementation cycle in his DNP practice change project. The student also collected data before the intervention was implemented. The level of measurement is categorical and is discrete data. The student would like to measure the differences between the pre-implementation and post-implementation samples from the same population. Using the interactive statistical flowchart, what statistical test will he conduct on his data?
Chi-Square
Bonjovi’s test
Milli’s test
Pearson’s r
Question 11
8 / 8 pts
Using the interactive statistical flowchart, which of the assumptions below is an assumption for Chi-square analysis?
The data is collected with blinded researchers
The expected values totals is at least 5.
The data in the samples must be paired to each other
The sample size is at least 200.
Question 12
8 / 8 pts
The DNP student is reading a research study article in which there are 2 groups and one intervention. The level of measurement is ratio level data. The researchers measured the relationships and they have a true independent variable. Using the interactive statistical flowchart, what statistical test did the researchers most likely conduct?
John’s Relational test
Bonjovi’s test
Regression Analysis
Spearman’s Rank Correlation
Question 13
8 / 8 pts
The DNP prepared nurse understands that using statistics to show the results of the DNP project is important. In order to present the outcomes and findings from the project, the DNP nurse will use which descriptive statistics?
Dunn’s test and Chi-Square
Kruskal-Wallis and Dunn’s test
Skewness test
Mean and Mode
Question 14
8 / 8 pts
The DNP student is conducting data collection at the end of the implementation cycle in her DNP practice change project. The student also collected data before the intervention was implemented. The level of measurement is ordinal and the student has non-parametric data. The student would like to measure the relationships between the pre-implementation and post-implementation samples to find out if there is a correlation. The student realizes she does NOT have a true independent variable. Using the interactive statistical flowchart, what statistical test will she conduct on his data?
John’s Relational test
Bonjovi’s test
Spearman’s Rank Correlation
Milli’s test
Question 15
8 / 8 pts
A Ph.D. nurse performs an experiment testing the frequency and correlation of the participant demographics. He plots a histogram measuring income versus education level. He produces the following graph below. Which of the following describes this distribution?
Normal
Bimodal
Left Skewed
Right Skewed
Question 16
8 / 8 pts
The DNP student is conducting data collection at the end of the implementation cycle in her DNP practice change project. The student also collected data before the intervention was implemented. The level of measurement is ratio and the student has parametric data. The student would like to measure the relationships between the pre-implementation and post-implementation samples. The student realizes she has a true independent variable. Using the interactive statistical flowchart, what statistical test will she conduct on his data?
John’s Relational test
Palatium test
Bonjovi’s test
Regression Analysis
Question 17
8 / 8 pts
The mean is influenced by _______.
the order of the data
the total number of the same values
the individual scores
the standard deviation
Question 18
8 / 8 pts
If the assumptions of the statistical test are violated, the researchers can use the statistical test anyway because the results will still be valid.
True
False
Question 19
8 / 8 pts
What is the mean of the following numbers? 6, 4, 1, 9, 3, 8, 3, 5, 10?
5.4
3
6
5
Question 20
8 / 8 pts
The mean measurement of central tendency is calculated by _____.
placing all data collected in numerical order and selecting the middle number
subtracting the lowest number from the highest number
dividing the total sum of all the data by the total number of data points
by selecting the most frequent data point
Question 21
8 / 8 pts
A Ph.D. nurse performs an experiment testing the frequency and correlation of the participant demographics. She plots a histogram measuring income versus education level. She produces the following graph below. Which of the following describes this distribution?
Normal
Bimodal
Left Skewed
Right Skewed
Question 22
8 / 8 pts
The DNP student is reading a research article in which the researchers are conducting a correlational study. The researchers want to quantify the association between two continuous variables. Which of the following is a true assumption that needs to be met to conduct correlational analysis?
Correct!
Data is parametric
Data is non- parametric
There is skewed distribution
Outliers exist in the data
Question 23
8 / 8 pts
The DNP student is reading a research study article in which there are 4 groups with three different interventions. The level of measurement is ratio level data. The researchers measured the differences between the groups. Using the interactive statistical flowchart, what statistical test did the researchers most likely conduct?
John’s Relational test
Bonjovi’s test
ANOVA
Spearman’s Rank Correlation
Question 24
8 / 8 pts
Standard deviation tells you ________.
how spread out the data is
how many outliers there are
what the mean, median and mode are
the square root of the mean
Question 25
8 / 8 pts
The range of the data is calculated by doing the following:
Adding the individual numbers in the sample and dividing by the total number of observations in the sample
Selecting the number in the exact middle of the data sample
Squaring the variance
Subtracting the lowest value in the sample from the highest value
Solution:NR716 Week 7 Quiz Statistics
Question 1
8 / 8 pts
Which of the following is considered a continuous variable?
The genders of students in this class
The total number of students in this class
The hair colors of students in this class
The healthcare specialty of students in the class
Question 2
8 / 8 pts
The findings from your DNP project include the weights of your patients that you measured before and after the evidence-based project. You understand you have ___________ data and will use ____________as a statistical measure.
Continuous data; p values
Discrete; percentage
Discrete; median
Continuous; means
Question 3
8 / 8 pts
Which of the following variables is considered to be a discrete variable?
The height of the patients
The blood pressure of the patients
The temperature of the patients
ect!
The gender of the patients
Question 4
8 / 8 pts
Which of the following is the least useful in understanding how varied your data scores are?
Standard deviation
Variance
Mean
Range
Question 5
8 / 8 pts
Using the interactive statistical flowchart, please select the term that is described by data that is unconnected and distinct and separate. The level of measurement is nominal and ordinal. Some examples are first or second place in a horse race or in a high school class rating, or numbers of children born in a family. Some other examples are married and not married, high school graduate or not a graduate.
Monodicotoumous data
Discrete data
Measured data
Random sampled data
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Related:(Solution) NR716 Week 8 Discussion Reflection on Learning and Practice Readiness