-
Home
- Collaborative statistics
- The chi-square distribution
- Practice 2: contingency tables
This module provides a practice on Chi-Square Distribution as a part of Collaborative Statistics collection (col10522) by Barbara Illowsky and Susan Dean.
Student learning outcomes
- The student will conduct a test for independence using contingency tables.
Conduct a hypothesis test to determine if smoking level and ethnicity are independent.
Collect the data
Copy the data provided in
Probability Topics Practice 1: Contingency Tables into the table below.
Smoking levels by ethnicity (observed)
| Smoking Level Per Day |
African American |
Native Hawaiian |
Latino |
Japanese Americans |
White |
TOTALS |
| 1-10 |
|
|
|
|
|
|
| 11-20 |
|
|
|
|
|
|
| 21-30 |
|
|
|
|
|
|
| 31+ |
|
|
|
|
|
|
| TOTALS |
|
|
|
|
|
|
Hypothesis
State the hypotheses.
-
-
Expected values
Enter expected values in the above below. Round to two decimal places.
Analyze the data
Calculate the following values:
Graph the data
Conclusions
State the decision and conclusion (in a complete sentence) for the following preconceived levels of
.
Questions & Answers
number of sport play by 50 student construct discrete data
width of the frangebany leaves on how to write a introduction
Solve the mean of variance
Step 1: Find the mean. To find the mean, add up all the scores, then divide them by the number of scores. ...
Step 2: Find each score's deviation from the mean. ...
Step 3: Square each deviation from the mean. ...
Step 4: Find the sum of squares. ...
Step 5: Divide the sum of squares by n – 1 or N.
kenneth
Is mistake done to something
Vutshila
What is the life teble
anas
statistics is the analyzing of data
how do you calculate mean
diveving the sum if all values
Shaynaynay
let A1,A2 and A3 events be independent,show that (A1)^c, (A2)^c and (A3)^c are independent?
data collected all over the world
Shaynaynay
construct a less than and more than table
The sample of 16 students is taken. The average age in the sample was 22 years with astandard deviation of 6 years. Construct a 95% confidence interval for the age of the population.
Bhartdarshan' is an internet-based travel agency wherein customer can see videos of the cities they plant to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400
a. what is the probability of getting more than 12,000 hits?
b. what is the probability of getting fewer than 9,000 hits?
Bhartdarshan'is an internet-based travel agency wherein customer can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400.
a. What is the probability of getting more than 12,000 hits
Akshay
Sorry i want to learn more about this question
Bright
a= 0.20233
b=0.3384
Sufiyan
How do I interpret level of significance?
It depends on your business problem or in Machine Learning you could use ROC- AUC cruve to decide the threshold value
Shivam
how skewness and kurtosis are used in statistics
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
Google Play and the Google Play logo are trademarks of Google Inc.
