Merge branch 'fix-data-type-for-q007' into 'master'

Convert float to int (Q007)

See merge request !13

data-preparation.py

@@ -19,6 +19,7 @@ def _load_data(path: str) -> DataFrame:
     data_df: DataFrame = read_csv(filepath_or_buffer=path, sep=",")
     # Set LimeSurvey IDs as index
     data_df.set_index(keys="id", drop=True, inplace=True)
+    data_df.loc[:, "Q007"] = data_df.loc[:, "Q007"].astype("Int32")
 
     return data_df