The number of regular season wins for each National Football League team in 2009 are listed. 10 9 7 6 10 9 9 5 14 9 8 7 13 8 5 4 11 11 8 4 12 11 7 2 13 9 8 3 10 8 5 1 a. What is the mean and standard deviation of the data? . Round to the nearest tenth (one decimal place). Units Required. b. Complete the following statement. At least 88.9% of all teams in the National Football League will win between ______ and ________ games in the regular season. c. Write a one-sentence interpretation about the population using the mean and standard deviation. On average, teams will win ______ games with a standard deviation of _________ games.
Added by Yvonne Z.
Step 1
The standard deviation is a measure of how spread out the numbers are from the mean. Mean = (10+9+7+6+10+9+9+5+14+9+8+7+13+8+5+4+11+11+8+4+12+11+7+2+13+9+8+3+10+8+5+1) / 32 = 8.3 (rounded to the nearest tenth) Standard Deviation = √[(Σ(xi - mean)^2) / N] = Show more…
Show all steps
Close
Your feedback will help us improve your experience
Kari Hasz and 91 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The number of regular season wins for each National Football League team in 2009 are listed. a. What is the mean and standard deviation of the data? In the boxes that do not apply, type N/A. Round to the nearest tenth (one decimal place). Work: L1: Calculator Function: Mean: μ = x̄ = Standard Deviation: σ = s = b. Complete the following statement. At least 88.9% of of teams in the National Football League will win between and games in the regular season. c. Write a one-sentence interpretation about the population using the mean and standard deviation. On average, teams will win games with a standard deviation of games.
David S.
The number of regular season wins for each National Football League team in 2009 are listed. 10 9 7 6 10 9 9 5 14 9 8 7 13 8 5 4 11 11 8 4 12 11 7 2 13 9 8 3 10 8 5 1 a. What is the mean and standard deviation of the data? Be sure you are utilizing the correct symbol for your answer. In the boxes that do not apply, type N/A. Round to the nearest tenth (one decimal place). Units Required.
Rashmi S.
Find the range, mean, variance, and standard deviation of the population data set. The numbers of regular season wins for each American Football Conference (AFC) team in 2012 66 $\begin{array}{cccccc}13 & 10 & 12 & 11 & 7 & 8\end{array}$ $\begin{array}{cccccccc}10 & 7 & 12 & 4 & 6 & 5 & 2 & 2\end{array}$
Descriptive Statistics
Measures of Variation
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD