×

### Let's log you in.

or

Don't have a StudySoup account? Create one here!

×

or

## Stats 214

1 review
by: Rio Notetaker

23

1

5

# Stats 214 PSYC 110

Rio Notetaker
University of Louisiana at Lafayette

Get a free preview of these Notes, just enter your email below.

×
Unlock Preview

Chapter 3 section 3
COURSE
Introductory Psychology
PROF.
Nolan Williams
TYPE
Class Notes
PAGES
5
WORDS
CONCEPTS
Stats
KARMA
25 ?

## 1

1 review
"Can you just teach this course please? lol :)"
Kaela

## Popular in Psychlogy

This 5 page Class Notes was uploaded by Rio Notetaker on Friday February 5, 2016. The Class Notes belongs to PSYC 110 at University of Louisiana at Lafayette taught by Nolan Williams in Winter 2016. Since its upload, it has received 23 views. For similar materials see Introductory Psychology in Psychlogy at University of Louisiana at Lafayette.

×

## Reviews for Stats 214

Can you just teach this course please? lol :)

-Kaela

×

×

### What is Karma?

#### You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 02/05/16
3.1 Measures of Position DEF: Let x be a value from a population with mean _____ and standard deviation _______. The z­score for x is  Z= Example Compute and Interpret: A national center for Health Statistics study states that the mean height for an adult male in thμ=¿S is  69.4 inches with a standard deviation ofσ=¿ 3.1 inches. The mean height of an adult female iμ=¿ 63.8  inches with a standard deviation ofσ=¿ 2.8 inches. Who is taller relative to their gender, a 73 inches tall  male or a 68 inches tall female? Solution: Z­score and the Empirical Rule: When a population has a histogram that is approximately bell­shaped, then ­Approximately 68% of the data will have z­scores between _______ and _______. ­Approximately 95% of the data will have z­scores between _______ and _______. ­All, or almost all, of the data will have z­scores between ________ and ________. DEF: For a number p between 1 and 99, the pth percentile separates the lowest _______ of the data from the  highest (100­p)%. Procedure for Computing the Data Value Corresponding to a Given Percentile Step 1: Arrange the data in ______________ order. Step 2: Let n be the number of values in the data set. For the pth percentile, compute the value: L = Step 3: If L is a whole number, then the pth percentile is the average of the number in position L and and the  number in position L+1. If L is not a whole number, round up to the next higher whole number. The pth percentile is the number in the  position corresponding to the rounded up value. Example: Compute the percentiles below given the following data set. 1.2 1.3 1.3 1.4 1.4 1.4 1.5 1.9 1.9 2.3 2.6 3.7 6.8 9 12.1 14.3 15.6 16.7 16.9 20.3 a. 15% percentile b. 64% Percentile Procedure for Computing the Percentile Corresponding to a Given Data Value: Step 1: Arrange the data in increasing order Step 2: Let x be the data value whose percentile is to be computed. Use the following formula to compute the  percentile: Percentile: Round the result to the nearest whole number. Example Continued:   Based on the above table from previous example, the number 6.8, what is the percentile corresponding to this  data value? Solution: DEF: Every data set has three quartiles: ­The first quartile, denoted _________, is the _______ percentile. ______ separates the lowest ____________  of the data from the highest ________. ­The second quartile, denoted ________, is the ________ percentile. ______ separates the lower ______ of the  data from the upper ______. _______ is the same as the _________ The third quartile, denoted _____, is the _______ percentile. ______ separates the lowest _______ of the data  from the highest _________. Example: Based on the above definitions, determine the first, second, and third quartiles for the following data: 3.8 3.9 4.2 4.6 4.8 4.9 5.1 5.7 5.8 6.7 6.9 DEF: The five­number summary of a data set consists of the following quantities:  DEF: An outlier is a value that is considerably _______ or considerably ______ than most of the values in the  data set. Q: How do we determine outliers? A:  DEF: The interquartile range (IQR) is found by subtracting the first quartile from the third quartile. IQR = The IQR Method for Finding Outliers Step 1: Find the first quartile and the third quartile of the data set. Step 2: Compute the _________________________ Step 3: Compute the outlier boundaries. These boundaries are the cutoff points for determining outliers.  Lower Outlier Boundary =  Upper Outlier Boundary =  Step 4: Any data values that is less than the lower outlier boundary or greater than the upper outlier boundary is  considered to be an outlier. **Example: Find the five number summary and if there are any outliers of the data for the following data set: .001 1.5 1.7 1.9 2.4 2.6 6 18.5 Solution: DEF: A boxplot is a graph that presents the __________________ along with some additional information  about the data. Procedure for Constructing A Boxplot Step 1: Compute the first quartile, the median, and the third quartile. Step 2 Draw vertical lines at the first quartile, the median, and the third quartile. Draw horizontal lines between  the first and the third quartiles to complete the box. Step 3: Compute the lower and upper outlier boundaries. Step 4: Find the largest data value that is less than the upper outlier boundary. Draw a horizontal line from the  third quartile to this value. This horizontal line is called a whisker. Step 5: Find the smallest data that is greater than the lower outlier boundary. Draw a horizontal line (whisker)  from the first quartile to this value. Step 6: Determine which values if any, are outliers. Plot each outlier separately.  Example: Construct a boxplot based on the previous example (**).

×

×

### BOOM! Enjoy Your Free Notes!

×

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

## Why people love StudySoup

Jim McGreen Ohio University

#### "Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Anthony Lee UC Santa Barbara

#### "I bought an awesome study guide, which helped me get an A in my Math 34B class this quarter!"

Bentley McCaw University of Florida

#### "I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

#### "It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!
×

### Refund Policy

#### STUDYSOUP CANCELLATION POLICY

All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email support@studysoup.com

#### STUDYSOUP REFUND POLICY

StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here: support@studysoup.com

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to support@studysoup.com