PEARSON’S PRODUCT-MOMENT CORRELATION COEFFICIENT ANSWERS TO EXERCISE 23 Question 1 The r value for the relationship between Hamstring strength index 60o and the Shuttle run test is -0.149. This r value shows a weak correlation between the two variables‚ as it is less than the 0.3 threshold for significance. Therefore‚ the r value is not significant. Question 2 Between r=1.00 and r=-1.00‚ there is no difference in terms of strength. Both values are on the extreme ends of the spectrum and signify
Premium Statistics Statistical significance Statistical hypothesis testing
standard deviation were used to describe the length of labor. These were appropriate since mean and standard deviation can be calculated on an interval level of measurement. 3. Range could also be used to describe the length of labor since this statistic can be used on interval data with no natural zero point. 4. The distribution of scores was similar for the experimental and control groups for length of labor. The experimental group had a mean of 14.63 hours and the control group had a mean of
Premium Statistics Arithmetic mean Standard deviation
1. Were the groups in this study independent or dependent? Provide a rationale for your answer. Independently due to the data being collected independently 2. t = −3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer. t = -3.15 describes mental health in this study. This is significant because mental health plays a big role in the outcome of MI patients. 3. Is t = −1.99 significant? Provide a
Premium Null hypothesis Statistical hypothesis testing Hypothesis
Applied Statistics at Grand Canyon University Exercise 20 from Workbook 1. Which patient scored the highest on the preoperative CVLT Acquisition? What was his or her T score? The 3rd patient scored 63 which is the highest CVLT T-score. 2. Which patient scored the lowest on postoperative CVLT Retrieval? What was this patient’s T score? The 4th patient scored the lowest on the postoperative CVLT Retrieval with a score of 23. 3. Did the patient in Question 2 have more of a memory
Premium Temporal lobe Arithmetic mean Standard deviation
variables that suggest an answer to the research question. OR Good & Hatt define hypothesis as shrewd guess or inference that is formulated and provisionally adopted to explain observed facts or conditions and to guide in further investigation. Importance: ❖ Hypothesis enables the researcher to objectively investigate new areas of discovery. ❖ Hypothesis provides objectivity to the research activity. ❖ It also provides
Premium Hypothesis Scientific method Null hypothesis
Exercise 36 Answers 1. Since the F value is significant‚ based on the p-value of 0.005 which is less than 0.05 which is sufficient to reject the null hypothesis. This suggests that there is a difference in the control and treatment groups. 2. Since the p- value is less than 0.05 and therefor the null hypothesis can be rejected. This presents that the mean‚ difficulty and mobility scores‚ must be different 3. The result was statistically significant with a probability score of p < 0.001.
Premium Statistical hypothesis testing Statistical power Statistical significance
An Introduction to Fire Protection Engineering for Buildings By J. Paul Guyer‚ P.E.‚ R.A. PDHLibrary Course No 0005455 2 PDH HOURS An Introduction to Fire Protection Engineering for Buildings Guyer Partners 44240 Clubhouse Drive El Macero‚ CA 95618 (530)7758-6637 jpguyer@pacbell.net J. Paul Guyer‚ P.E.‚ R.A. Paul Guyer is a registered fire protection engineer‚ mechanical engineer‚ civil engineer‚ and architect with over 35 years experience in the design of buildings and
Premium Fire protection Construction Building
1. In the table below‚ the random variable x represents the number of cups or cans of caffeinated beverages consumed by Americans each day‚ based on data from the National Sleep Foundation. Determine whether or not the data represent a probability distribution. *If the data represent a probability distribution‚ find its mean and standard deviation. * If the data don’t represent a probability distribution‚ identify the requirement(s) for a probability distribution that is not satisfied.
Free Random variable Standard deviation
Research‚ Statistics‚ and Psychology PSY315 Jan 12‚ 2014 Without research methods and processes‚ an unimaginable amount of information would be lost to the world. Though research topics and researcher personalities vary greatly‚ universal truths or basics of research stand the test of time. In this paper‚ I examine the role of research and statistics in the field of psychology by explaining several important parts of research. I define research and
Premium Scientific method Science Research
Research and Statistics in Psychology Tracy Charles PSY/315 October 14‚ 2012 Jennifer Slothower Research and Statistics in Psychology Psychologist need to adhere to scientific research methods when doing a study “the scientific method requires systematic observation and a willingness to modify understanding based on these observations” (Cloninger et al.‚ 2008). This method involves careful observation and collection of data to rule out theories that are not valid. “Scientific
Premium Scientific method Research