Nobody downloaded yet

Statistics Review Questions - Essay Example

Comments (0) Cite this document
Summary
100. Therefore, percentages mean out of 100 and when we compare two percentages with each other we intend to form our conclusion based on…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER91.9% of users find it useful
Statistics Review Questions
Read TextPreview

Extract of sample
"Statistics Review Questions"

Download file to see previous pages Correlation is a method to measure the association in between two variables. When we compare the correlating scores of two variables, we are trying to determine whether the variables are related to each other or not. The purpose of doing correlations is to allow us to make a prediction about one variable based on what we know about another variable.   
A frequency distribution is the tabulation of raw data obtained by dividing it into classes of some size and computing the number of data elements (or their fraction out of the total) falling within each pair of class boundaries. A frequency distribution can be modeled as a histogram or as a pie chart (Frequency Distribution).
A pie chart shows the differences between two separate variables or subjects. A pie chart is a graph that is in the shape of a circle which represents a total of 100%. Other variables or subjects are shown on the chart with respect to their relative percentages to the whole. The different subjects are shown in different colors and the size of each subject in the pie is proportional to the percentage of the subject.
A bar graph shows raw data and it is designed to show different values of two or more subjects but instead of using the pie to represent data it uses horizontal and vertical bars that represent a different value. The bar graph has numbers along the side of the bars to indicate the value of the variable and there are scales which show what variable is being measured.
The difference between the pie chart and the bar graph is that a bar graph is capable of showing change over time. While a single pie chart cannot show changes over time by itself, it can only represent the given percentages at a fixed point in time.
A graphical display of a frequency table is called a frequency polygon. The X-axis has the intervals shown on it while the number of scores in each interval is represented by the height of a point located above the middle of the ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Statistics Review Questions Essay Example | Topics and Well Written Essays - 2500 words”, n.d.)
Statistics Review Questions Essay Example | Topics and Well Written Essays - 2500 words. Retrieved from https://studentshare.org/miscellaneous/1562632-statistics-review-questions
(Statistics Review Questions Essay Example | Topics and Well Written Essays - 2500 Words)
Statistics Review Questions Essay Example | Topics and Well Written Essays - 2500 Words. https://studentshare.org/miscellaneous/1562632-statistics-review-questions.
“Statistics Review Questions Essay Example | Topics and Well Written Essays - 2500 Words”, n.d. https://studentshare.org/miscellaneous/1562632-statistics-review-questions.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Review questions
...? Review Questions [INSERT HERE] [INSERT YOUR HERE] Review Questions Chapter 8 Review Questions Companies can reduce health care costs during negotiation by promoting a healthy lifestyle; healthy employees keep costs low. Requiring pre-employment and random drug and alcohol testing, offering smoking cessation assistance, and providing discounted gym memberships will help to ultimately keep health care costs low. All of these factors can potentially give the negotiator the upper hand during the negotiation process. Insurance companies do not like to pay claims, by promoting a healthy lifestyle for employees, and conveying that ideal to the...
3 Pages(750 words)Research Paper
Article Review /Statistics
...SUMMARY Survey: The Pew Research Center for the People & the Press is a research group which is independent. The center studies attitudes of the people and their opinions toward the press, politics and public policy issues. During the US presidential elections 2008, the center conducted a survey among 3,402 adults. These adults were interviewed on landline and cell phones. According to the survey, it was found out that since mid-October, “McCain has made gains among young voters, although they still favor Obama by a wide margin (by 61% to 36% among those ages 18 to 29). Obama holds a wide lead over John McCain among those who say they have already voted (32% of all likely voters) or say they plan to vote before Election Day (7... Survey: The...
2 Pages(500 words)Essay
Review questions
...Review Questions Part A: Topics 3 Q1. Self esteem and learning outcomes It is true that the relation ship between teachers and their pupils play a big role in determining the pupils self concept. Self concept is the set of attitudes and knowledge that one normally has about himself. The concept that one has of himself also affects their self esteem. In my own experience, there are those teachers who have a healthy relationship with students, and this enables the students to have better self esteem, but there are also those students who have bad experiences with their teachers, and this affects their esteem (Westwood, 2008). For instance, if a teacher is mean and does not like a certain student, say...
8 Pages(2000 words)Book Report/Review
Statistics questions
...Grade Statistics questions Question a) The assumption being made by the prosecutor is that the perpetrator commiting the crime will be a student of one of the two schools, probably Duke or UNC (b) Probability=(0.1*0.2)+0.03=0.05 From the result above, the probability is 5.0%, this is too low and still not very reliable for the prosecutor to convict the suspect. Question 2 (a) Null hypothesis: The incidence of crimes committed on full moon days, new moon days, and seventh days after the full moon and new moon were equal. Alternative hypothesis: The incidence of crimes committed on full moon days was much higher than on all other days, new ...
6 Pages(1500 words)Assignment
Statistics: Project Questions
...Statistics: Project Questions School Affiliation Statistics: Project Questions Question Mean of API= 165.49/13= 12.73 Variance= 15,818.46- 15563.08= 255.38/12= 21.28 Standard error= 0.035 Z-score of 95% confidence = 1.96 but Z= (x-mean)/standard deviation Price= 0.976×0.035+12.73= 12.8 Question 2 95% confidence= Z0.05= 1.96 Mean oil price= 165.49/13 = 12.73 Variance= 1/n-1(x-mean) 2 1/12(2109.1937-2106.6877) = 0.2088 s.t = 0.20881/2/13= 0.035 z= (x-u)/s.t where s.t is the standard error. Lower limit= 12.73- 1.96×0.035= 12.6614 Upper limit = 12.73+1.96×0.035= 12.7986 Confidence region for the mean=...
1 Pages(250 words)Assignment
Review questions
...Review Questions By Choose an airlines; foreign or domestic and then list the seven stages in the application of the marketing principles found in Chapter 1 of the Shaw textbook to this airline company. (Shaw, 2007). Qatar Airways 1. The customer Qatar Airways focuses on its customers. The company conducts market research to learn about the consumer demographics, needs, preferences, and purchasing habits (Qatar Airways, 2014). 2. The marketing environment Generally, Qatar operates in a competitive environment. Qatar is a politically stable country. However, poor economy hinders most people to use air transport. Socially, most people are reluctant to fly, believing it is for specific class of individuals....
2 Pages(500 words)Assignment
Review questions
...Question Realism is nothing more than the overall ideology of satisfied and powerful s. In this perspective, realism acts as an element that remains inseparable from powerful and satisfied states (Rosenthal 157). Earlier views on realism depend on a number of assumptions that depict the inseparability between a powerful and satisfied state and realism. These include the assumption that states are the sole actors in aspects of international relations that only matter to them. In addition, the state’s policy maker has the primary responsibility of creating and maintaining the ultimate national power. The sole reason of the state has the support of the assumption that no central authority reigns above the state. Only...
3 Pages(750 words)Assignment
3 questions - statistics related
...STATISTICS Q1. According to the statistical analysis of the correlation of the forms of consumer installment credits, the following result from the table gives the correlation levels. Table 1: Correlations Gas Cards Travel & Enter. Card Bank Credit Card Retail Card Total Credit Card Total Installment Card Gas Cards Pearson Correlation 1 .775** .750** .784** .781** .736** Sig. (2-tailed) .005 .008 .004 .005 .010 N 11 11 11 11 11 11 Travel Enter. Card Pearson Correlation .775** 1 .960** .975** .973** .958** Sig. (2-tailed) .005 .000 .000 .000 .000 N 11 11 11 11 11 11 Bank Credit Card Pearson Correlation .750** .960** 1 .978** .994** .996** Sig. (2-tailed) .008 .000 .000 .000 .000 N 11 11 11 11 11 11 Retail...
2 Pages(500 words)Assignment
Statistics questions
... interval to predict the mean length of all new car loans from that banks is 43 months to 79 months A95% confidence interval to predict the mean length of all new car loans from that bank is between 43 months and 79 months. 17. Sample mean, = 354 mL, Sample standard deviation, s = 1.5 mL and sample size, n = 24. a. The null and alternate hypotheses are (The ice cold bottles of beer contain the advertised 355 mL.) (The ice cold bottles of beer contain less than the advertised 355 mL.) The test will be left-tailed test, as the alternate hypotheses involve less than “<” symbol. b. The selected level of significance, α is 0.05 (or 5%). c. The selected test statistic is using the t distribution, as the population standard deviation, σ is unknown... . d. The degrees of freedom are df = n – 1 = 24 – 1 = 23 At the level of significance of 0.05 with 23 degrees of freedom, the left tail critical value of t is -1.714....
3 Pages(750 words)Statistics Project
Statistics Questions
...Statistics Questions Statistics Questions What is the elevation of the line at X=0? 2. When X increases, does Y increase or decrease? How much does Y change when X increases by 1? Based on the positive value of the gradient, when X increases, Y also increases. The equation of the line of best fit is given by For, X=1 3. How much of the variation in Y is accounted for by X? Based on the value of, 48.96% of the variation in Y is accounted for by X. 4. What is the predicted value of Y at X = 5? The value of Y predicted at X=5 is 19.324 5. In terms of the range of the X data, why is the predicted value of Y at X = 5 reliable? The predicted value of Y is reliable...
1 Pages(250 words)Assignment
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Essay on topic Statistics Review Questions for FREE!
Contact Us