1 / 11

How many times do a student get detention per month?

How many times do a student get detention per month? . Pedro Mendoza Agustin Ocampo Period 6 2011-2012. CA Standard.

jessie
Download Presentation

How many times do a student get detention per month?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. How many times do a student get detention per month? Pedro Mendoza Agustin Ocampo Period 6 2011-2012

  2. CA Standard 8.0 Students organized and describe distribution of data by using a number of different methods, including frequency gables, histograms, standard line and bar graphs, stem-and-leaf displays, Scatter plots, and box-and-whisker plots. 17.0 Students determine confidence intervals for simple random sample from a normal distribution of data determine the sample size required for a desired margin error. 18.0 Students determine the P-value for a statistics for a simple random sample from a normal distribution

  3. Hypothesis • (claim) we believe that the number of times do a student get detention is 2 times

  4. Data Collection • (cluster sample and systematic sampling) • We collected data by using the cluster sample method. We asked 20 seniors each one of us for a total of 40 seniors. Then, we use systematic sampling by asking every 5th seniors how many times do they get detention per month?

  5. Data • Length of detention (per month) • 1, 2, 2, 1, 1, 3, 1, 1, 2, 1, 2, 1, 3, 2, 1, 1, 2, 2, 1, 3, 1, 5, 3, 2, 1, 1, 1, 2, 2, 1, 4, 1, 2, 3, 2, 1, 3, 4, 5, 1,

  6. Histogram

  7. Statistics • From our survey, students sample detention mean time is 1.925 with sample standard deviation 1.1410

  8. Confidence Interval • 95% Confidence Interval • Z-Interval • (1. 5714, 2. 2785) • We are 95% confidence mean times do a student get detention per month is between 1.5 to 2.2

  9. Z Test • P-value = 0. 6776 > = 0. 05 • At 5% level of significance, we failed to reject the . There is enough evidence to support the claim

  10. Error Analysis • Our sample mean is 1. 925 times, and the 95% confidence level of the population mean is between 1. 5714 to 2. 2785 times. The marginal error is about 0. 3536 times • Our sample error is due to possible underrepresentation is because students were absents or students lied.

  11. Conclusion • We hypothesized that Century students’ detention time average is 2 times per month. In our survey of 40 students, we find the sample mean of 1. 92 with a standard deviation of 1. 14. We conclude that the population mean for all the students is between 1. 5 to 2.5 with 95% confident. We test our initial hypothesis with 5% level of significance, and confirm our hypothesis is incorrect

More Related