Degrees Of Freedom Analysis

Great Essays
Register to read the introduction… This refers to a positive whole number that indicates the lack of restrictions in calculations. The following states below:
(rows-1)(columns-1) = (4-1)(5-1)= 3= 12
Critical Value: In hypothesis testing, the critical value is a number that separates a region where the null hypothesis will not be rejected from a region where it will be rejected. It is achieved at a particular percentile range and is then determined using a chart, known as the distribution topic.” The equation below states the critical value at 5% significance level:
C.95 =21.026
* The .95 is taken from 100%-5%=95% *The 12 is from the degrees of freedom
Lastly, I found what conclusion could be drawn regarding the grades achieved on a semester basis and the time spent on a daily basis on social media sites. I used information from stating my null and alternative hypothesis to either accept/reject my null/alternative. I did this through comparing my critical value at 5% and my chi-squared . My outcome is stated below:

cal < co (df) = accept the Ho cal > co (df) = reject Ho and accept HI

= 54.33 C.95 =21.026
…show more content…
It is puzzling that students could spend as much as two hours or more and still achieve an average of an A. However, in order to conclude that all of the following surveys are 100% accurate, extensive research would have to be completed (regarding academic backgrounds, level of classes taken AP/CP, increase in number of students surveyed, etc.). One subset of data defying the trend were the surveys that showed 13 students achieved an A and yet spent more than three hours in total on average per night on social media sites. However, then one must take into account the student’s intelligence level and how much time he or she spends sleeping, studying, etc. This led to uneven data and possibly skewed results. It is evident though, that based on this chart and the final secured evidence, that this does not affect my

Related Documents

  • Improved Essays

    Nt1310 Unit 4 Case Study

    • 424 Words
    • 2 Pages

    The standard deviation is found to be .55. Using these calculations there is a confidence level of 95% and the confidence interval would be .2. Therefore, it is a 95% certainty that the true population mean falls with the range of 14.7 to 15.1…

    • 424 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Data Type Description and example use **You must provide an example of what each data type could be used for** String A data type used in programmings such as an integer and floating point unit, but is used to represent text rather than numbers. • I bought 3 CD’s which were from 3 different artists. It shows that I bought it from 3 different people. • If (Option 1==Option 2) If the values are the same, then it is true.…

    • 902 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    From my data, I do believe there are some parts that may match up with other students, while other aspects of it might be totally different. For example, I’m sure there are students whose lives revolve exclusively around the internet, while I try to use it in moderation; plus, my data plan would go through the roof. Although, I’m sure numerous individuals like myself use Netflix, Hulu, or the television to view shows and movies throughout the day, it just depends on how much time a person can give up in order to watch something. On certain days I’ll have nothing to do so that means a Netflix marathon is in order, while on other days I need to get down to business to conquer my stack of homework so only one or two…

    • 519 Words
    • 3 Pages
    Decent Essays
  • Improved Essays

    Problem Set 7.1 a) Null Hypothesis: Within the 95% confidence interval there is no significant difference between the two-point threshold test disdances among the different areas. Alternate Hypothesis: Within the 95% confidence interval there is a significant difference between the two-point threshold test disdances among the different areas. b) The null hypothesis should be rejected because the p-value is 0 which is lower than 0.05, also because the conifence intervals for the back of the hand and the fingertip does not overlap to be statistically equal. c)…

    • 1494 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    Fruit Flies Lab Report

    • 894 Words
    • 4 Pages

    Since we have six different type of phenotype for the result for the F2 offspring, six would minus one therefore the the number of degree of freedom being used for the lab report would be five degree of freedom. The Chi square number for the fruit flies problem is 0.795. The number 11.072 determined whether the hypothesis is supported or not supported because based on Chi square 5% or less is not supported while a higher percentage of five is supported by the hypothesis.…

    • 894 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Scientific Analysis Paper 02 – Designing Experiments Some might read the CNN article “Are music and happiness linked” and think that going to concerts regularly makes you a happier person, but it would be wrong to assume that without further scientific evidence. Instead of causation (one causing the other) it could be just a correlation (just happens to go together). Just as Dr. Weinberg mentioned in the article, maybe people that are happier tends to express their emotion through music and dancing. To find out if going to concerts regularly can really make you happier I would conduct an experiment, where I would monitor the happiness level of about three hundred people for over six weeks.…

    • 493 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    In 1966 nineteen percent of students had A-average or above, but in 2009 that percentage was already up to forty-eight (Twenge 416). With such a huge jump in the amount of A’s being given out it would be expected that students are studying more, but this is not the case. In 1966 forty-seven percent of people were studying six hours plus a week, and in 2006 that dropped down to thirty-five percent of people. It is common knowledge that students that study more learn more than students who study less. Because of grade inflation, students today don 't have to study as much as in the past.…

    • 891 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Wwc Quick Review Paper

    • 513 Words
    • 3 Pages

    What Works Clearinghouse. (2009, April). WWC quick review of the report “college outcomes comparisons by AP and non-AP high school experiences.” The study was meant to prove whether taking Advanced Placement Courses as well as AP exams in high school, would improve college performance. This was tested on students who graduated from a texas public high school during 1998 and 2002 and then attended a Texas public college.…

    • 513 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Today, only 8% of high school students get enough sleep on an average school night, as there are “not enough hours in the day” to be able to do homework and study, have time with friends and family, and participate in extracurricular activities (Duval). Teenagers also report stress levels that are higher than the majority of adults and 83% of them say that school is a significant source of that stress (Shapiro). The average student is already glued to a desk seven hours a day. Add two to five hours of homework every night (or even more depending on the rigorousness of the course load) and then students are working 45 to 60 hours a week! Both of these numbers come close to or extremely exceed the average 47 hour workweek of an average American adult.…

    • 730 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Lab Report Sample

    • 939 Words
    • 4 Pages

    Our p-value in this data set is 0.00, which gives strong evidence to reject the null hypothesis. The individual T-test, with a p value of 0.0 also tells us to reject the null hypothesis. The range in percentage alcohol is 10.1, with 10.5 (Complete Statistics) being the highest percentage of alcohol, and 0.4 the lowest percentage of alcohol. The mean of this data is 5.1…

    • 939 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    My Gull Hypothesis

    • 419 Words
    • 2 Pages

    My null hypothesis would state that between adult learners taking a course online or in a class setting, there is no difference between midterm tests, on the occasion that both groups take a proctored midterm test. My alternative hypothesis would state that between adult learners taking a course online or in a class setting, there is a difference between midterm tests, on the occasion that both groups take a proctored midterm test. My target population would be first-year students taking college algebra online or in-person that attend a community college in Kentucky, as long as they both have proctored midterm. I would use a stratified sampling method to collect samples of 50 college algebra students midterm scores from 6 different community…

    • 419 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Where the two points intercept on the table, it gives the critical value. 7.815 21 After doing the manual calculations and bell graph, the data indicates the matching numbers with the Excel spreadsheet. The Chi-square Test Statistic shows 21 far from 7.815. The p-value indicates 0.0001 or .01% error at .05 or 5%. The data emerges a powerful and concrete report.…

    • 799 Words
    • 4 Pages
    Improved Essays
  • Superior Essays

    Significant Figures

    • 702 Words
    • 3 Pages

    No one will argue that determining the number of significant figures and keeping with the rules of those “sigfigs” throughout an already strenuous calculation can be a pain. Countless points and half-points have been deducted from tests throughout chemistry’s ages from students claiming that significant figures are, ironically, insignificant. But, let’s consider the following scenario. Joey is in his inorganic chemistry lab. The second step to the lab tells him to measure out the mass of Iron he had calculated in the pre-lab.…

    • 702 Words
    • 3 Pages
    Superior Essays
  • Improved Essays

    With around 90 percent of adolescents and young adults possessing a cell phone in their own room every night, it makes one wonder what possible issues could be evolving this recent occurrence. Sleeping habits, or the lack thereof, is one topic of discussion where the heightened use of social media due to increased cell phone use in young adults has been affected. This has been linked with a large increase in sleeping disorders in young adults, whether it be because they cannot get off their phone or because the light of their phone causes disorder with their circadian rhythm pattern.…

    • 164 Words
    • 1 Pages
    Improved Essays
  • Improved Essays

    Education has become an elusive process since it’s no longer possible to teach at a constant pace for every student. As a result, advanced placement (AP) courses have allowed for gifted high school students to participate at the collegiate level. However, with increasing amounts of AP courses and their incentives of earning college credit in high school has constructed a false sensation that students are benefiting greatly, when in reality, they’re causing massive amounts of stress for little benefit. Now, AP courses are demanding and strenuous courses, but they can help students by earning college credit and saving them money. The problem that persist is whether the potential to earn college credit, in high school, is worth the amount of work…

    • 775 Words
    • 4 Pages
    Improved Essays