Question: Look at both numerical and categorical data using descriptive measures and graphical techniques. Open the mammals.csv dataset, a dataset of species of mammals, and various

Look at both numerical and categorical data using descriptive measures and graphical techniques. Open the mammals.csvdataset, a dataset of species of mammals, and various statistics. You may download the dataset and read its description at the following link, then answer the questions:

https://www.openintro.org/data/index.php?data=mammals

  1. we need a new variable called brain_type. This variable can only have three values: small, medium, and large. The values are defined as follows:
    1. small: if brain_wt < 10
    2. medium: if brain_wt >= 10 and < 100
    3. large: if brain_wt> 100. Perform a One Factor Analysis of Variance (ANOVA) using SPSS comparing the mean gestation values for the three brain_type groups at an alpha of 0.05.
  2. What is the null hypothesis for this ANOVA:
  3. Calculate the mean of each of the 3 groups:
    1. Mean of small group ______________
    2. Mean of medium group ______________
    3. Mean of large group _______________

  1. alpha: ________________
  2. F test statistic: ________________
  3. p-value: ________________
  4. Paste a screenshot of your ANOVA result from your software below

2. Based on the results:

  1. Would you reject or fail to reject the null hypothesis?
  2. Provide your interpretation of the results of the ANOVA.

this is the link to the original dataset from where you get the brain_wt to get the brain_type column

https://www.openintro.org/data/index.php?data=mammals

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