Wednesday, March 4, 2015

Let's Review Statistics

Send us your answer or post them on the comment section.

Image source - http://www.mathsisfun.com/data/standard-normal-distribution.html

A study found there's only a small correlation between winning cheerdance competition and number of hours of practice in cheerdance. The correlation shows that a very weak relationship demonstrates  the chance of winning  top prize with that of number of hours of practice in cheerdance. Such correlation would be demonstrated by a score of
a) -.50
b) +.99
c) +.10
d) .00




In the recent concluded Psychometrician licensure exam, when the result of top performing schools were plotted in a normal distribution, it was found that PUP scored 1 standard deviation above the average. So what percentage of schools scored higher than PUP?

a) 25%
b) 34%
c) 50%
d) 15%




Performing well in the recent Psychometrician licensure exam and a score that is 2 standard deviations above the average in a normal distribution. Your score is better compared to what percentage of the population?

a) 68%
b) 95%
c) 50%
d) 88%




Performing poorly in the recent Psychometrician licensure exam and a score that is 0.5 standard deviations above the average in a normal distribution. How many test takers scored lower than your score?


a) 69.1%
b) 55.5%
c) 96.0%
d) 82.2%




What is the median of the following distribution - 2, 3, 9, 7, 6, 4?
a) 6.5
b) 5.5
c) 6
d) 5




Juan got a score of 145 in the Psychological Assessment exam with a mean of 100 and a standard deviation of 15. What is his equivalent z score?

a) +2.5
b) +1
c) +2
d) +3





Online Quiz/Reviewer Links (4 Subjects)

https://www.facebook.com/notes/philippine-psychometrician-reviewer/online-reviewer-links/273294872880999



Related links:

http://www.mathsisfun.com/data/standard-normal-distribution.html

http://www.slideshare.net/yanloveaprilbordador/filipino-psychology-concepts-and-methods

http://www.learningcommons.uoguelph.ca/guides/university_learning/handouts/highlighting.pdf

https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient

https://en.wikipedia.org/wiki/Pearson_product-moment_correlation_coefficient

https://en.wikipedia.org/wiki/Regression_analysis

https://en.wikipedia.org/wiki/Multivariate_analysis_of_variance

https://en.wikipedia.org/wiki/Analysis_of_covariance

https://en.wikipedia.org/wiki/Analysis_of_variance

http://www.mathnstuff.com/math/spoken/here/2class/90/stanine.htm

http://www.mathsisfun.com/data/percentiles.html

http://www.mathsisfun.com/data/skewness.html

http://www.mathsisfun.com/data/quartiles.html

http://www.mathsisfun.com/data/random-variables-mean-variance.html

http://www.mathsisfun.com/data/correlation.html

http://www.mathsisfun.com/data/standard-deviation.html