{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter 3 sec 3

Chapter 3 sec 3 - MeasuresofPosition Chapter3Section3...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Measures of Position 1 Chapter 3 Section 3 Data Description Mr. Kenneth Horwitz October 13, 2010
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
3-3 Measures of Position Z-score Percentile Quartile Outlier 2
Image of page 2
Measures of Position: Z-score z-score  or  standard score  for a value is obtained  by subtracting the mean from the value and  dividing the result by the standard deviation. A z-score represents the number of standard  deviations a value is above or below the mean. 3 X X z s - = X z μ σ - =
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Vehicle Speed The mean speed of vehicles along a stretch of highway  is 56 miles per hour with a standard deviation  of 4  miles per hour.  You measure the speed of three cars  traveling along this stretch of highway as 62 miles per  hour, 47 miles per hour and 56 miles per hour.  Find  the z-score that corresponds to each speed.  What can  you conclude? 4 Each z-score is how many standard deviations away from the mean they are.
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern