Recent content by jophysics

  1. J

    MATLAB Low Pass Filter using Matlab for Data Filtering

    Hi, I need to filter my data using a low pass filter. I would like to do this using Matlab. The sampling rate of my data is 200 Hz, and I would like a cut-off frequency of 30Hz. Someone can help me, please? jo
  2. J

    High School Interpretation of box-percentile plots

    Hi everybody, anybody can provide me with some guidelines to interpret box-percentile plots? I am so confused :(. thank you! jo
  3. J

    Undergrad Why Use Z-Scores for Motion Data Analysis?

    Hi, I would like to know something about the possibility to convert data set into z-scores to ensure a common scale for analysis. More specifically, when this conversion is needed and why. I am working on motion data (from 3 persons) tracked from video and I can use a common reference for...
  4. J

    High School Velocity, speed, acceleration and ?

    Hi! a very simple question: I know the difference between velocity and speed. I would like to know if there is an analogous for the word acceleration. thank you for your attention! jo
  5. J

    High School Interpreting Box Plots with Questionnaire Data

    Dear all, I need to evaluate some data from questionnaires (in the form of scale of values from 0 to 10) and I thought to use the box plots. Please, someone can provide me with some helps (references,etc) for the interpretation? In some cases, the median does not falls inside the box but it is...
  6. J

    Undergrad What is Autocorrelation Time & Covariance?

    Hi everybody, please someone can explain me what is the autocorrelation time and how it is linked to coviarance? thank you!
  7. J

    Undergrad Help with Distribution-Free Outlier Test | jophysics

    Hi all, I am searching a distribution-free outliers test. Someone can help me? thank you jophysics