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What is the standard deviation of these four scores 2 4 3 7?
Standard deviation is the square root of the mean. The mean for this set is (2 + 4 + 3 + 7)/4 = 16/4 = 4; the square root of this is 2.
What is the Mean for the following set of numbers 10 12 8 5 2?
the arithmetic mean for the set of numbers is 7.4. but the geometric mean is 6.25826929.
What is a weak negative correlation?
A negative correlation is when you compare 2 sets of data on a line graph (e.g. scores in a French test and scores in an English test), the higher one thing is, the lower the other is (e.g. someone might score 98% on the French test but only 12% on the English test (or visa versa)). A positive correlation is the other way around. A weak correlation is when there is a lot of deviation from the line of best fit (there will always be one with correlations as a line of best fit shows correlations after all) whereas with a strong correlation, there is little deviation.
What is the mean absolute deviation of the following data 6 8 9 2 1 22?
The mean absolute deviation is 5
When should you use the median of a set of data?
The median of a set of data is used for similar purposes as the mean. They both give you a middle number that represents what the set of data fluctuates around. While the mean gives you the exact center, the median simply gives you the middle piece of data. The following is an example of why the median is sometimes more helpful than the mean: Consider a class of 5 students that take a test that is scored on a scale of 0 to 500. The scores of the students are as follows: 1) 25 2) 120 3) 102 4) 248 5) 500 The mean of the scores is (25+120+102+248+500)/5 = 199 The median of the scores is 120 Looking only at the mean, the teacher may get the impression that the students are more skilled than they really are, since the average score of the class is 40% of the highest possible score. However, one student scored only 49 points higher than the mean and the other 3 didn't get within 70 points of it. Looking at the median, the teacher sees that another accurate representation of the scores is 120. This is only 24% of the highest possible grade and better represents what most of the class got. Unlike the mean, the median wasn't set deceivingly high by the one student with a perfect score.
Which statistic is misleading in the following set of test scores 2 85 87 88 89 A. upper quartile B. mode C. mean D. median?
The statistic that is misleading in this set of test scores is the mean (C). The mean is calculated as (2 + 85 + 87 + 88 + 89) / 5 = 50.2, which does not accurately represent the overall performance of the students due to the outlier score of 2. In contrast, the median (88) and mode (85) provide a better indication of the central tendency of the majority of the scores.
Assume that aset of test scores is normally distributed with a mean of 100 and a standard deviation of 20 use the 68-95-99?
68% of the scores are within 1 standard deviation of the mean -80, 120 95% of the scores are within 2 standard deviations of the mean -60, 140 99.7% of the scores are within 3 standard deviations of the mean -40, 180
Give an example of a set of 6 test scores where the mean and the median have same value but the mode is different?
2, 2, 5, 7, 9, 11. Mean = Median = 6 Mode = 2
The mean of 5 different scores is 10 what are the largest and smallest possible values for the median if all test scores must be whole numbers?
If scores of zero are permitted, the lowest median is 2 as in (0,1,2,3,44) and the highest median is 10 as in (8,9,10,11,12). If a zero score is not permitted, then the lowest median is 3 as in (1,2,3,4,40).
What subject tests do the UC's require?
Note: The following information is from the UCLA.edu website (link below).Test RequirementsStudents must submit scores on an approved core test of mathematics, language arts, and writing. This requirement can be satisfied by taking the following:* The ACT Assessment plus the ACT Writing Test. Both tests must be taken at the same time; we do not combine test scores from multiple sittings.- or -The SAT Reasoning Test with critical reading, mathematics, and writing scores from the same sitting.- and -* Two SAT Subject Tests in two different subject areas*:o English (literature)o history/social studieso mathematics (Level 2 only)o scienceo languages (other than English)* Applicants to the Henry Samueli School of Engineering and Applied Science are strongly encouraged to take the following SAT Subject Tests: Math Level 2 and a science test (Biology E/M, Chemistry, or Physics) that is closely related to the applicant's intended major.Take these tests as early as possible, and have your test scores sent directly to UCLA. December of your senior year is the latest you can take any test in time for scores to be used for our selection process.
What is the trick for calculating mean. I mean some decent trick to make me do it in my head?
You add the scores together and then divide by the number of scores. So if you rolled a dice and your scores were, 3, 5, 2, and 6 You would add these together, getting 16, and then you would divide this by 4 (because you have 4 scores) and so your mean would be 4 (16/4=4) sum of scores / number of scores = mean. Hope this helps.
What is the mean and standard deviation of a distribution of T-scores?
The answer depends on the degrees of freedom (df). If the df > 1 then the mean is 0, and the standard deviation, for df > 2, is sqrt[df/(df - 2)].
What are the required GRE scores for veterinary school?
Scores will vary according to the specific school. Applicants must submit test scores from the Graduate Record Examination (GRE), the Veterinary College Admission Test (VCAT), or the Medical College Admission Test (MCAT), depending on the preference of the college to which you are applying. Currently, 22 schools require the GRE, 4 require the VCAT, and 2 accept the MCAT. However, admissions to veterinary school is very competitive. The school will be looking at you as an entire individual, and not just in parts. In other words, the admission decision is not based solely on test scores, but may also include the following. Admission factors: * Class Rank * Rigor of undergraduate coursework and prerequisites * Standardized Test Scores * Academic GPA Considered: * Application Essay * Extracurricular Activities * Geographical Residence * Racial/Ethnic Status * Recommendations * State Residency * Volunteer Work * Work Experience
Are two sets of scores with the same mean identical?
No, two sets of scores with the same mean are not necessarily identical. The scores could differ in terms of their distribution, range, variability, and individual values even though they have the same mean.
What is the average sat score for students in Howard university?
Test Scores for 2006-2007 SAT verbal scores over 500 70%, SAT math scores over 500 66%, ACT scores over 18 94%, SAT verbal scores over 600 25%, SAT math scores over 600 21%, ACT scores over 24 33%, SAT verbal scores over 700 4%, SAT math scores over 700 3%, ACT scores over 30 2%
If the scores for a test have a mean of 70 and a standard deviation of 12 what percentage of scores will fall below 50?
z=-20/12 = -1.667 Assuming normal distribution, P(Z < -1.667) = 0.04779 or 4.8% of the scores should be less than 50. You can get the probabilities by looking them up on a table or use Excel, where +Normdist(50,70,12,true). My normal table has only 2 digit accuracy so for -1.67 = 0.0475.
What are the 2 types of Audit Tests?
Following are two types of tests:Control testCompliance test
