scatter plot

  1. S

    Correlation in questionnaire data

    Hello, I'd really appreciate if someone can help me with a particular problem, concerning the approach I should take in statistically analysing the results of questionnaire data concerning intensity of use of social media, on the one hand, and social relationships on the other. The...
  2. V

    SPSS Scatterplot: How to combine/subsume values under just one label, e.g. ">200"

    Hi there, I've got this massive problem with my scatterplot on spss. I've drawn time (hours) on the x-axis versus laboratory sampling measures on the y-axis. I have very few time values exceeding 200 hours, so I'd like to subsume them under e.g. ">200", so that my scatterplot doesn't get...
  3. L

    scatter plot for partial regression (in spss)

    Hi all I have an SPSS regression model in which I have a dependent variable, an independent variable and 4 covariates. I want to create a scatter plot for the dependent and independent variables WHILE CONTROLLING for my covariates (the way I understand the default SPSS scatter plot that...
  4. D

    Finding Significant Difference between Linear Regressions

    Hello. I have a scatterplot with two different sets of data plotted. Each individual set has its own linear regression formula and R-squared value. What type of test could I run on Microsoft Excel to get a p value to see if one dataset's trend is significantly different than that of the other...
  5. E

    How to calculate max/min scales on a scatter plot

    Good morning! I have 3 log scatter plots that I want to establish smooth maximum and minimum lines. What is the usual mathematical method to do that? (Image and excel file links below.) The black lines on the scatter plot images are hand drawn. The third scatter plot is especially tricky...
  6. I

    check for Heteroskedasticity?

    Hi guys, just a quick question - I need to find out whether there is Heteroskedasticity in my data. I did a scatterplot of standardised residuals on standardised predicted values, in order to check whether the data is "fanning out"... I don´t think so, but I just wanted to double-check with...
  7. L

    scatter plots with 2 covariates. spss

    Hi, I have two independent variable (location and season), one dependent (number of juvenile whales) and two co-variates (number of adult whales and length of longest whale). I know I have to do a ANCOVA, but I need to produce a scatter plot to compare the slopes of regression.... How? is...
  8. F

    Comparing Slopes Best Fit Lines Between 2 Groups

    So lets say I have 2 data sets. Both sets contain various types of information about a person, including age as well as other factors relating to health (eg. cholesterol, blood pressure, etc) The difference between the sets is that set 1 is sampled from the general population and set 2 is...