normal distribution - ANSWER-a frequency distribution that is shaped like a symmetrical bell, unimodal curve
total relative frequency of distribution - ANSWER-area under curve = 100% of the data or 1.0
68% of values - ANSWER-% fall within 1 standard deviation of mean
95% of values - ANSWER...
cnsl 503 Mod 4 Solved 2023
normal distribution - ANSWER-a frequency distribution that is shaped like a symmetrical
bell, unimodal curve
total relative frequency of distribution - ANSWER-area under curve = 100% of the data or 1.0
68% of values - ANSWER-% fall within 1 standard deviation of mean
95% of values - ANSWER-% fall within 2 standard deviations of mean
99.7 % of values - ANSWER-fall with in 3 standard deviations of he mean
normal curve defined by - ANSWER-mean and standard deviation
raw score - ANSWER-exact value that is observed
standard score - ANSWER-indicates exactly how many standard deviations a raw score
is above or below the mean. Z-score
What is the purpose of calculating z-scores? - ANSWER-The purpose of calculating z-
scores is to understand a score's relative standing within a distribution. The z-score standardizes scores from different data sets with different means
formula for raw score to z-score - ANSWER-
formula for z-score to raw score - ANSWER-
formula for sample mean to z-score - ANSWER-divided by standard error o/square root of sample
standard normal table - ANSWER-Shows the proportion of values that fall to the left (or below) of a given z-score in a normal distribution
How to find percentage above z-score - ANSWER-1- p-value
hypothesis testing using a z-score - ANSWER-1) State the null (H0 ) and alternative (Ha
) hypotheses.
2) Determine the critical values.
3) Calculate the z-score.
4) Compare the z-score to the critical value and determine whether to reject H0.
one-tailed test - ANSWER-a directional test because it specifies whether the population mean increases or decreases after the treatment (can be left or right tail)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CLOUND. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
