Exercises 11 and 16
# 11
1. The demographic variables which were considered at the interval/ratio level are length of
labor, age, return to work, annual income, and numbers of hours working per week.
2. The length of labor is explained through mean and st
According to Grove (2011), Sampling is a process of selecting subjects who are
representative of the population being studied. Random sampling usually provides a sample that
is representative of a population because each member of the population is select
Name:
Date:
Topic 2: Population and Sampling
Distribution Excel Worksheet
Directions: Answer all questions and submit to instructor at the end of Topic 2
1 A. For a normal distribution that has a mean of 100,
and a standard deviation of 8, determine the Z
The Analysis of Variance, popularly known as the ANOVA, can be used in cases where
there are more than two groups. When we have only two samples we can use the t-test to
compare the means of the samples but it might become unreliable in case of more than
Name:
Date: July 26th 2014
Hypothesis Testing
Answer each question completely to recieve full credit
1. There is a new drug that is used to treat leukemia. The following data
represents the remission time in weeks for a random sample of 21 patients
using
Name:
Date: July 26th 2014
Hypothesis Testing
Answer each question completely to recieve full credit
1. There is a new drug that is used to treat leukemia. The following data
represents the remission time in weeks for a random sample of 21 patients
using
Name:
Date:
Topic 2: Population and Sampling
Distribution Excel Worksheet
Directions: Answer all questions and submit to instructor at the end of Topic 2
1 A. For a normal distribution that has a mean of 100,
and a standard deviation of 8, determine the Z
Name:
Date: July 12th 2014
Topic One: Mean, Variance, and Standard Deviation
Please type your answer in the cell beside the question.
Please type you answer in the cell beside the question.
1. Identify the sampling technique being used. Every 20th patient
Workbook Exercise # 18
1. The mean of weight relative to ideal in male is 5.48 and standard deviation is 22.93.
Mean 1.96 (Standard Deviation)
= 5.48 1.96 (22.93)
= 5.48 1.96(22.93) = 5.48 44.94 = -39.46; = 5.48 + 1.96 (22.93) = 5.48 + 44.94 =
50.42.
Scor
The researchers use statistical methods because those methods are more convenient and
practical to measure a sample of the population. Some methods test hypothesis by comparison.
The two of the known statistical hypothesis test are the T-test and the Z-te
Date: July 27th 2014
Exercise # 20
1. Female patient on # 3 with 63 T score is the highest preoperative Acquisition.
2. Male patient on # 4 with 23 T score is the lowest postoperative Retrieval.
3. Yes, because patient scored 44 and the average is 47.8 in
An interaction effect refers to the role of a variable in an estimated model, and its effect
on the dependent variable. Basically, an interaction is when the effect of one factor (input
variable) on the dependent variable (output variable) differs among l
Whatarethecharacteristicsofapopulationforwhichitwouldbeappropriatetousemean/median/mode?
Whenwouldthecharacteristicsofapopulationmaketheminappropriatetouse?
According to Burns (2011), measures of central tendency frequently are referred to as
the midpoint
Exercise 18
1. Assuming that the distribution is normal for weight relative to the ideal and 99% of the
male participants scored between(-53.68, 64.64), where did 95% of the values for weight
relative to the ideal lie?
5.48-1.96(22.93)=-39.46
5.48+1.96(22
Alpha levels are used in hypothesis tests. The significance level is the probability of
making the wrong decision when the null hypothesis is true. In hypothesis tests, two errors are
possible, Type I errors and Type II errors. Type I error: Supporting th
Anova: Single Factor
SUMMARY
Groups
Count
Group 1
6
Group 2
23
Group 3
11
ANOVA
rce of VariationSS
Between Groups
937.9303
Within Groups
10484.47
Total
11422.4
Sum
Average Variance
625 104.1667 44.16667
2507
109 344.9091
1300 118.1818 267.5636
df
MS
F
P-v
Date: Oct. 9, 2011
ANOVA Excel Worksheet
Directions: Answer all questions and submit to instructor at the
end of Module 4
Type your answer here: As we can see, the mean level of Group 3 (118.182) is higher than that of either Group
1 (104.167) or Group 2
Graphics and statistics are frequently used in the health care profession to prove or
disprove theories related to illness, impact of medications, and effectiveness of treatments.
Statistics and graphs are often used to prove a point, and can easily be tw
Name:
Date:
Hypothesis Testing
Answer each question completely to recieve full credit
1. There is a new drug that is used to treat leukemia. The following data
represents the remission time in weeks for a random sample of 21
patients using the drug.
10
11
Name:
Date: August 3rd 2014
Topic 4: ANOVA Excel Worksheet
Directions: Answer all questions and submit to instructor at the end of
Module 4
Statistical Conclusion:
The calculated F value (1.66) is less than the F Critical value (3.25) therefore the result
Date: August 10th 2014
Exercise # 23
1. The value of r is 0.149. This is not significant since p (0.424) value > (0.01).
2. The values of r show a positive correlation among the variables that means both
variables increases together. Thats why values of r
A sampling plan or method outlines strategies used to obtain a sample for a study. The
plan is designed to increase representativeness and decrease systematic variation or bias. The
sampling plan may use probability (random) or nonprobability (nonrandom)
Date: August 1, 2014
Exercise # 36
1. The results indicate a difference between the control and treatment groups so we will
refuse the null hypothesis because the p value is 0.005, which is < level of significance
(0.05). 9.619 is the F ratio, which is st
Name:
Date:
Topic 4: ANOVA Excel Worksheet
Directions: Answer all questions and submit to instructor at the
end of Module 4
Statistical Conclusion:
The statitical conclusion is that mean systolic blood pressue levels for each group increased with
age.
The
Name:
Date:
Topic Five: Correlation/Regression and Chi Square
Excel Worksheet
Directions: Answer all problems and submit to instructor at the end of Module 5
SYSTOLIC AND DIASTOLIC BLOOD PRESSURE OF FEMALES
The following table represents systolic and dias
1
HLT0362V
Week Three Guide
Hypothesis Testing
Hypothesis
A statement about a population developed for the purpose of testing. In statistics, a hypothesis is
an idea, an assumption, or a theory about the behavior of one or more variables in one or more
po
EXERCISE 36 Analysis of Variance (ANOVA)
Name: _Esther Anderson, RN_
1. The researchers found a significant difference between the two groups (control
and treatment) for change in mobility of the women with osteo
Exercise 27 Questions to be Graded
Page 320
Instructions
Go to Exercise 27 on page 305 of your book.
Type out the questions on a Word Document (or snip, or paste)
The data for this question is found in TABLE 27-4 on page 297 of your book. I will post it b
Statistics for Nursing Research: A Workbook for Evidence-Based
Practice, 2nd Edition
Exercise 10: Description of a Study Sample
Questions to Be Graded
Name: Linda Foor
Class: HLT-362V-0500
Date: May 19, 2017
1. What demographic variables were measured at
EXERCISE 6 Questions to Be Graded
Name: Linda Foor
Class: HLT-362V-0500
Date: May 12, 2017
1. Frequency is 7, and percentage is 14%.
2. Retired is 61%, Sick leave is 15%.
3. Total sample size 91. Still employed is 14. Percentage still employed is 15%. 7+7