997 Search Results for Normal Distribution
size is an important step in the sample selection process. In Negarandeh, Bahabadi & Mamaghani's (2014) study, the procedure used to determine the sample size is clearly described. Following a pilot study, using the sample size formula, and base Continue Reading...
The role of community in achieving proper water and sanitation standards in times of disaster
It is important to note that whenever a natural or manmade disaster hits a particular region, the entire community is put at risk since it is them who su Continue Reading...
Substance / Alcohol Abuse among the Elderly
Substance/alcohol abuse among the elderly 60 years and older
Alcohol and substance abuse among the elderly is a significant social problem, not only because people in this age group tend to have very perm Continue Reading...
Data Integration1Probability is a valuable method for the CEO to consider as it offers a systematic approach to dealing with uncertainty and risk in business. It facilitates data-driven decisions, allows businesses to understand and quantify risk, ai Continue Reading...
Business Analytics and IntelligenceWord ReportNovemberList of TablesTable 1: Percentage Daily Internet Usage Rates and Users Shopping Online in the UKTable 2: Profit Margin Summary StatisticsTable 3: Turnover Summary StatisticsTable 4: Current Ratio Continue Reading...
Probability and StatisticsSears Bamboo fabric was used for advertising its products with the running tag 100% pure bamboo. This assertion was false since statistically, it is impossible to deliver finished clothing products made out of one material a Continue Reading...
RESPONSE R (TWO)Response R (Two)K. KimIn the first post, K. Kim opted to focus on a descriptive analysis to gather socio-demographic data and medical history of the sample to assess the prevalence of lifetime and current prescription-opioid use disor Continue Reading...
Article Critique of ‘Workplace Bullying in the OR’
Problem & Purpose
In this article, the statement of the problem concerns issues of workplace bullying and has looked at two medical centers. Hence, the purpose of this article is to d Continue Reading...
Histograms and Visual Interpretation
Histogram 1 shows the total scores of females. Histogram 2 shows the total scores of males.
Both histograms display negative skew with longer tails on the left than on the right. The kurtosis is flatter among ma Continue Reading...
Komi
Highly effective systems have a high congruence with the tasks that they are supposed to complete, but they also need to be capable of a certain degree of self-management. A resilient system is one that can survive in multiple stable states. Su Continue Reading...
Interaction between SES and College Performance
Zwick, R. & Himelfarb, I. (2011). The effect of high school socioeconomic status on the predictive validity of SAT scores and high school grade-point average. Journal of Educational Measurement, 48 Continue Reading...
Z Test in Psychology
Stating the research question
The z test is being used to test whether watching a film about the conditions of institutionalized mentally ill patients will influence viewers' attitude towards the mentally ill. Evaluations are a Continue Reading...
SCORE
THE Z- SCORE
It is a statistical tool which determines whether there is any dependence or correlation among two or more variables. Z score is closely related to the p- value which is the probability that the null hypothesis will be rejected. Continue Reading...
g., demented vs. nondemented) were evaluated using the Pearson ?2 test. Levels of tHcy, vitamin B12, and folate were log-transformed to fit normal distributions. Odds ratios (ORs) and 95% confidence intervals (CI) were calculated using two logistic r Continue Reading...
Criminal Justice & Criminology
Has the Miranda vs. Arizona ruling decreased the percentage of arresting official violations of defendant Fifth Amendment rights?
(Rian)
CJ327W Research Methods in Criminal Justice
The Miranda vs. Arizona rulin Continue Reading...
Market Efficiency and Empirical Approaches to Test for it
A review and discussion of market efficiency
A financial market is efficient with respect to information item, if the new information has fully influenced the market prices. In an efficient Continue Reading...
Multiple Regression
It is hypothesized that self-efficacy, appraisal, challenge and resources will negatively predict perceived stress whilst avoidant strategies will increase levels of perceived stress.
Sample Description
The sample consisted of Continue Reading...
86
34.00
additive 2
9
11.33
Total
16
Test Statisticsb
gas mileage
Mann-Whitney U
6.000
Wilcoxon W
34.000
Z
-2.701
Asymp. Sig. (2-tailed)
.007
Exact Sig. [2*(1-tailed Sig.)]
.005a
a. Not corrected for ties.
b. Grouping Variable: fu Continue Reading...
Although a regular Dimmeys shopper, he doubted that his purchasing habits would change, particularly since he did not know the price point at which the new cookware would be offered. He also questioned the value of having house brands, hinting that Continue Reading...
condition may affect those who posses this deformity.
Albinism is a genetic condition that disrupts the normal distribution of the coloring pigment in the human skin known as melanin. Fitzpatrick (1960) wrote "Albinism is an example of one type of Continue Reading...
health effects of phthalates. To better explain, these are a group of industrial chemicals with numerous profitable uses comprising personal-care merchandises and plastic supplies. The authors explain within the abstract the most frequently used che Continue Reading...
Economic Trends
In terms of output and growth, Canada's real GDP was 2.96% higher than it was a year ago, but the growth trend is slowing down from a growth rate high of 3.81% in Q3 2010. Japan's economy has contracted in Q2 2011 by 0.76%. It's rate Continue Reading...
These kinds of compulsive behaviors are observed on a daily basis. It has been highlighted by the authors that there is an acceptable use policy implicated on the students in academic institutions and on the daily basis, without regarding the restri Continue Reading...
The color of the car was also considered as 1= brown, 2 = black, 3 = blue, 5 = red, 6 = yellow and 7 = white. Other variables included the time of the day and month at which the person was caught driving to control for the possible rush hour affect Continue Reading...
This in turn gives the financial professional better idea of the stock's risk behavior.
The equation used in this security market line relationship is as follows:
Mathis, CAPM, par. 3)
The measure of systematic risk is considered Beta or bi while Continue Reading...
The nation's ports and harbors are world class due to the large amount of national exports in oil and goods. However, the nation's airport infrastructure is lacking even though there are 144 airports with paved runways out of a total almost 1400 aro Continue Reading...
PHYSICAL EXERCISE AND MENTAL HEALTH Data Analysis ProceduresThe study seeks to determine the relationship between physical activities and mental health in teachers. The data was analyzed using SPSS version 15.0. Chi-square tests were used to test dem Continue Reading...
US Healthcare System
Healthcare staffing needs are expected to change in the next 10 years. As 78 million Americans are expected to hit retirement age, there will be need for more healthcare staffs who cater for the needs of the elderly or aging popu Continue Reading...
Purchase of Organic Food in Germany and Italy
Descriptive Statistics
Answering the Research
Understanding the Term Organic
The Impact of Understanding on Purchase Decisions
Education and the Purchase Decision
Education and Attitudes
Culture a Continue Reading...
Academic Honesty in Nursing Profession: Annotated Bibliography
Kececi, A., Bulduk, S., Oruc, D. & Celik, S. (2011). Academic Dishonesty among Nursing Students: A Descriptive Study. Nursing Ethics 18(5) 725-733
This cross-sectional, descriptive Continue Reading...
Internal Validity
Is maturation a possible threat to the internal validity of the study? Why or why not?
For measures of academic achievement, six months (which is the intended length of the study) is not a long enough period of time to be very con Continue Reading...
REDUCING RISKY BEHAVIOR FOR African-American TEENS
An Intervention for Reducing Risky Behavior Among African-American Female Adolescents: Provider Cultural Competency Training
The Office of Minority Health in the U.S. Department of Health and Human Continue Reading...
Chi-Square, T-Test and Correlation
Research Methods in Psychology a (HPS201/HPS771)
Crosstabs and Chi-Square
Scenario
Some researchers have suggested that there are two main types of personality: Type A and Type B. Individuals with Type A persona Continue Reading...
Statistics can help describe these relationships by providing a new model or language to present difficult concepts where words often fall short.
Not all of statistical ideas make complete sense to me. One such concept is the idea of "significance. Continue Reading...
groups whose results are reflected by the t ratios in Tables 2 and 3?
The pretest group and the post-test group.
Which't ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is thi Continue Reading...
The model assumes a normal distribution, so the greater the time to expiry, the greater the expected fluctuation in the stock's price. Thus, if the option is in the money, the greater the risk that it will expire out of the money; if the option is o Continue Reading...
The Type 1 error refers to rejecting the null hypothesis when it is true. The Type 2 error is when one rejects the alternative hypothesis even though it is true.
3. Parametric and non-parametric tests
Parametric tests usually deal with samples tha Continue Reading...