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Data collection experiment

Class Time:

Names:

    Student learning outcomes

  • The student will demonstrate the systematic sampling technique.
  • The student will construct relative frequency tables.
  • The student will interpret results and their differences from different data groupings.

Movie survey

Ask five classmates from a different class how many movies they saw at the theater last month. Do not include rented movies.

  1. Record the data.
  2. In class, randomly pick one person. On the class list, mark that person’s name. Move down four names on the class list. Mark that person’s name. Continue doing this until you have marked 12 names. You may need to go back to the start of the list. For each marked name record the five data values. You now have a total of 60 data values.
  3. For each name marked, record the data.
    ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
    ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
    ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
    ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
    ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

Order the data

Complete the two relative frequency tables below using your class data.

Frequency of number of movies viewed
Number of Movies Frequency Relative Frequency Cumulative Relative Frequency
0
1
2
3
4
5
6
7+
Frequency of number of movies viewed
Number of Movies Frequency Relative Frequency Cumulative Relative Frequency
0–1
2–3
4–5
6–7+
  1. Using the tables, find the percent of data that is at most two. Which table did you use and why?
  2. Using the tables, find the percent of data that is at most three. Which table did you use and why?
  3. Using the tables, find the percent of data that is more than two. Which table did you use and why?
  4. Using the tables, find the percent of data that is more than three. Which table did you use and why?

    Discussion questions

  1. Is one of the tables “more correct” than the other? Why or why not?
  2. In general, how could you group the data differently? Are there any advantages to either way of grouping the data?
  3. Why did you switch between tables, if you did, when answering the question above?

Questions & Answers

how do you get the 2/50
Abba Reply
number of sport play by 50 student construct discrete data
Aminu Reply
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Theresa Reply
Solve the mean of variance
Veronica Reply
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
what is error
Yakuba Reply
Is mistake done to something
Vutshila
Hy
anas
hy
What is the life teble
anas
hy
Jibrin
statistics is the analyzing of data
Tajudeen Reply
what is statics?
Zelalem Reply
how do you calculate mean
Gloria Reply
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?
Fisaye Reply
what is statistics
Akhisani Reply
data collected all over the world
Shaynaynay
construct a less than and more than table
Imad Reply
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.
Aschalew Reply
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?
Akshay Reply
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
1
Bright
Sorry i want to learn more about this question
Bright
Someone help
Bright
a= 0.20233 b=0.3384
Sufiyan
a
Shaynaynay
How do I interpret level of significance?
Mohd Reply
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
Owen Reply
yes what is it
Taneeya

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Source:  OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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