NR716 2021 October Week 7 Quiz Latest

NR716 Analytic Methods

Week 7 Quiz 

Statistics

Question 1Using the interactive statistical flowchart, the assumptions for the Student t-test are ALL the following EXCEPT:

  The data must be parametric data

  The data must be normally distributed

  The data is categorical (nominal data)

  Equality of variances (Homogeneity of variances)

 Question 2What is the mean of the following numbers? 6, 4, 1, 9, 3, 8, 3, 5, 10?

  5.4

  3

  6

  5

 Question 3The Four Levels of Measurement or Types of Data are:

  Nominal, Parametric, Linear, and Dichotomous

  Parametric, Continuous, Skewed, Interval

  Nominal, Ordinal, Interval and Ratio

  Level 1, Level 2, Level 3, Level 4

 Question 4Using the interactive statistical flowchart, the assumptions for the Pearson’s r test are ALL the following EXCEPT:

  The data must be parametric data

  The data must be normally distributed

  The data is categorical (nominal data)

  There is a linear relationship between variables

 Question 5When researchers set the level of significance, they are thinking about the possibility of Type I and Type II errors. When researchers are testing the effect of chemotherapy on cancer, which of these answers below would be a consequence of a type I error?

  The scientists report the chemotherapy is effective when it is not effective.

  The scientists report the chemotherapy is not effective when it is effective.

  The scientists report their results as inconclusive

  There is no way to determine the answer in this scenario

 Question 6The DNP student is conducting data collection at the end of the implementation cycle in her DNP project. She collected categorical outcome data. Using the DNP flow chart for selecting common descriptive statistics, what types of statistical tests will he conduct on his data?

  Median, Mode, Frequency

  Mean, Range, Variance

  Dunn’s test and Chi-Square

  Kruskal-Wallis and Dunn’s test

 Question 7What is the mean (average) of the following numbers? 10,6,4,4,6,4,1

  5

  4

  9

  6

 Question 8The DNP student is conducting data collection at the end of the implementation cycle in his DNP 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?

  Chia-Square

  Bonjovi’s test

  Milli’s test

  Pearson’s r

 Question 9What is the median of the following numbers 9, 10, 6, 5, 6?

  6

  5

  7.2

  4

 Question 10The DNP student is conducting data collection at the end of the implementation cycle in her DNP 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 11Standard 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 12Using 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 13Which of these is not one of the three measures of central tendency?

  Median

  Standard deviation

  Mode

  Mean

 Question 14When researchers set the level of significance, they are thinking about the possibility of Type I and Type II errors. When researchers are testing the effect of chemotherapy on cancer, in terms of safety, which error has the more dangerous consequences in this setting?

  Type I error

  Type II error

 Question 15If 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 16Which of the following is the least useful in understanding how varied your data scores are?

  Standard deviation

  Variance

  Mean

  Range

 Question 17Using the interactive statistical flowchart, what is the definition of a normal data distribution curve?

  The data are arranged in a straight horizontal line. The data are 3 standard deviations away from the mean.

Correct!

  The data is distributed evenly from the mean. Most data is less than two standard deviations from the mean. The data are in a bell curve illustration.

  The data is samples normally and is arranged in a scatter plot as a flowerpot illustration. The data is less than two standard deviations from the mean.

  The data is normally collected and illustrated by a wavy curve distribution. The data are two standard deviations away from the mean with some outliers.

 Question 18Using 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 19Which 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 20The DNP student is reading a research 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 21A 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?

graph showing the mean as smaller than the median

  Normal

  Bimodal

  Left Skewed

  Right Skewed

 Question 22The DNP student is conducting data collection at the end of the implementation cycle in her DNP 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 23The DNP student is reading a research article in which there are 4 groups. The level of measurement is nominal and ordinal level data. The researchers measured the difference between the means. Using the interactive statistical flowchart, what statistical test did the researchers most likely conduct?

  Regression Analysis

  Pearson’s r test

  Kruskal-Wallis test

  Spearman’s Rank Correlation

 Question 24A 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?

graph showing the mean, median, and mode as the same

  Normal

  Bimodal

  Left Skewed

  Right Skewed

 Question 25A 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?

graph showing mean as greater than the median

  Normal

  Bimodal

  Left Skewed

  Right Skewed

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