This website uses cookies to ensure you have the best experience.

# Statistics Essay

581 words - 3 pages

KIMBERLY PEARCE
October 12, 2014

Exercise 36

1. The researchers found a significant difference between the two groups (control and treatment) for change in mobility of the women with osteoarthritis (OA) over 12 weeks with the results of F(1, 22) = 9.619, p = 0.005. Discuss each aspect of these results. The F-value is high enough at the 5% level of significance to suggest a significant difference between the control and treatment groups. The p-value 0.005 < 0.05 hence this suggests a rejection of the null hypothesis, meaning that the control and treatment groups are found to be different.

2. State the null hypothesis for the Baird and Sands (2004) study that focuses on the effect of the GI with PMR treatment on patients’ mobility level. Should the null hypothesis be rejected for the difference between the two groups in ...view middle of the document...

001, according to the text.

4. If the researchers had set the level of significance or α = 0.01, would the results of p = 0.001 still be statistically significant? Provide a rationale for your answer.

Yes this still implies statistical significance because 0.001 < 0.01

5. If F(3, 60) = 4.13, p = 0.04, and α = 0.01, is the result statistically significant? Provide a rationale for your answer. Would the null hypothesis be accepted or rejected?

In this case the result would not be considered statistically significant because 0.04 > 0.01 would indicate that there is no statistical significance and except the null and conclude that there is no difference between the groups.
6. NOVA cannot be used to test proposed relationships or predicted correlations between variables in a single group. This is because ANOVA is tests relationships within various groups and among the groups.

7. The study had 149 subjects and 2 groups

8. The strength of the study where that they include a control group to test the dependent variable to examine the differences over time. The weakness of the study comes from the low number of subjects in the study. More subjects would have made the study more creditable.

9. The study results indicated a significant improvement in the pain scores of women with OA who received the treatment of guided imagery (F(1, 26) =4.406, p = 0.046). Thus, the null hypothesis was rejected. But in my opinion I would have liked to have seen a larger number of subjects. Also, including the standard deviations for the treatment and control groups also are needed to calculate the effect size in the study. The effect size is needed to conduct a power analysis to predict the sample size needed for future studies.

10. Problems and limitation with the study are the pain that leads to limited mobility and may lead to disability all of which can keep them from completely the task.

## Other assignments on Statistics

### Statistics Essay

4544 words - 19 pages I. Plug In Multiple Choice 1. What is a customer facing process? A) A standardized set of activities that accomplish a specific task, such as processing a customer's order B) Result in a product or service that is received by an organization's external customer C) Invisible to the external customer but essential to the effective management of the business and include goal setting, day-to-day planning, performance feedback, rewards, and

### Statistics Essay

890 words - 4 pages Data File 2 Chapter Three (Show all your work) 1) A teacher asked each of her students how many novels they had read in the previous six months. The results are shown below. 0 1 5 4 2 1 3 2 2 7 2 5 0 1 0 1 1 2 6 0 2 3 1 2 7 1 4 2 3 1 7 0 0 2 1 1 0 6 1 7 Construct a frequency table for the number of novels read. |Number |Frequency | |of novels

### Statistics

292 words - 2 pages Case Study: The “Chip Ahoy! 1,000 Chips Challenge (p. 357): Answer a, b, c, e (NOT d, but you should read Question d as it gives you hints to solve Question e). You must calculate results by hand (though you may use any technology of your choice to verify your answers). a. Obtain and interpret a point estimate for the mean number of chocolate chips per bag for all bags of Chips Ahoy! Cookies. 52986/42=1261.6 b. Construct and interpret a

### Descriptive Statistics Analysis Study

1000 words - 4 pages INDIAN INSTITUTE OF MANAGEMENT KOZHIKODE- KOCHI CAMPUS, INFOPARK, KAKKANAD, KOCHI- 30 Descriptive Statistics Analysis Study Submitted by, Rakesh Krishnan S, EPGPKC02-WEB076 Analysis on ITC Sun feast sales figures: ITC made a foray into the biscuits market by launching the Sunfeast range of biscuits in 2003. Since then, Sunfeast biscuits have always stood for quality and are known for offering innovative and wholesome biscuits

### Hlt362V Statistics Week 1

1223 words - 5 pages Lindsey Pierce Exercise 11 HLT-362V January 14, 2016 Using Statistics to Describe a Study Sample 1. What demographic variables were measured at least at the interval level of measurement? Answer: The demographic variables that are measured at the interval level are: age, income, length of labor, return to work, and number of hours working per week. 2. What statistics were used to describe the length of labor in this study? Were

### Mat 300 Statistics Bottling Company Case Study

382 words - 2 pages Mat 300 Statistics Bottling Company Case Study Assignment 1: Bottling Company Case Study MAT 300 Statistics Strayer University December 15, 2013 Calculate the mean, median, and standard deviation for ounces in the bottles. Bottle Number Ounces Bottle Number Ounces Bottle Number Ounces 1 14.5 11 15 21 14.1 2 14.6 12 15.1 22 14.2 3 14.7 13 15 23 14 4 14.8 14 14.4 24 14.9 5 14.9 15 15.8 25 14.7 6 15.3 16 14 26 14.5

### Statistics Review

927 words - 4 pages Use the information below to answer Questions 1 through 4. Given a sample size of 34, with sample mean 660.3 and sample standard deviation 104.9, we perform the following hypothesis test. Null Hypothesis [pic] Alternative Hypothesis [pic] 1. What is the test statistic? 2. At a 5% significance level (95% confidence level), what is the critical value in this test? Do we reject the null hypothesis

### Financial Statistics

3762 words - 16 pages Ett exempel p˚ samband mellan variabler a c J¨rgen S¨ve-S¨derbergh o a o Finansiell statistik, v˚rterminen 2011 a Vilka data har vi? Antag tv˚ variabler X och Y som antar v¨rdena a a x1 , x2 , . . . , xn , samt y1 , y2 , . . . , yn . Om vi ritar dem i ett spridningsdiagram s˚ markerar vi de ordnade a paren (x1 , y1 ), (x2 , y2 ), . . . , (xn , yn ) i ﬁguren. Vi uppfattar dessa par som ett stickprov. c J¨rgen S¨ve-S

### Hlt Statistics

338 words - 2 pages Exercise 36 “1. The researchers found a significant difference between the two groups (control and treatment) for change in mobility of the women with osteoarthritis (OA) over 12 weeks with the results of F(1, 22) = 9.619, p = 0.005. Discuss each aspect of these results.” The F-value is high enough at the 5% level of significance to suggest a significant difference between the control and treatment groups. The p-value 0.005 < 0.05 which

### Statistics Proves How Women Are Treated In The Us

326 words - 2 pages Note these aren't complete sources because I wanted you to look up all the other scary statistics in these departments. These statistics are very easily found. 40-50% of all murders of women in the USA are committed by intimate partners Source: U.S Department of Justice In the USA, 4 women are murdered per day by their intimate partners Source: U.S Department of Justice In the USA 3 to 4 million women are battered by their partners

3761 words - 16 pages MGSC 372 Fall 2014 Assignment 1 Prof. B. Smith Due Oct 4, QUESTION 1 The Pareto distribution, named after the Italian economist Vilfredo Pareto, is a probability distribution that may be used to describe social, scientific, geophysical, actuarial, and many other types of

## Similar Documents

### Statistics Essay 255 Words

255 words - 2 pages 1. What is population? 2. What is data? 3. What is measure of dispersion? 4. What is variance? 5. What is time series? 6. What is hypothesis? 7. What is consumer price index? 8. What is constant? 9. What is random sampling? 10. What is average? 11. What is lorenz curve? 12. What is type 1 error? 13. What is statistics? 14. What is cross table? 15. What is broken bar? 16. What is kurtosis? 17

### Statistics Essay 2000 Words

2000 words - 8 pages Test 1 Chapters 1, 2, 3 Introduction to Statistics / Math 13 − 12777 −Summer 2008 (Prof. Latham) 1. For each of the variables described below, indicate whether the variable is a quantitative or a categorical (qualitative) variable. Also, indicate the level of measurement for the variable: nominal, ordinal, interval, or ratio. Make sure your responses are the most specific possible. Indicate your choice for each by circling the appropriate

### Statistics Function Essay

423 words - 2 pages Statistics allows the presentation of figures and facts in a way or form that is define. This helps make it logical and more concrete then just describing. It consolidates the whole groups of figures into one figure. It also simplifies the data. The raw data on its own can confusing and seem incomplete. By using different measurements in statistics such as average, graphs, correlation; the data then becomes more simplified. These different

### Statistics Assignment

1044 words - 5 pages standard deviation of a data sample, what is the next thing to do to find the variance: Squaring the standard deviation will produce the variance (3.648) A Population: 19.    Determine how many observations in the pop3.csv file are of type a: 49949 20. Using the appropriate R function with the default options, what is the median of the time column of pop3 (round to 3 decimal places): 6.844 21. What is the variance of the time column of pop3 (rounded to three decimal places)? 54.916 References Yakir, B. (2011). Descriptive statistics. In Introduction to statistical thinking (with R, without Calculus). The Hebrew University.