DOC: Improve Factor and related docstrings

statsmodels/multivariate/factor.py

@@ -194,7 +194,8 @@ def fit(self, maxiter=50, tol=1e-8, start=None, opt_method='BFGS',
 
         Returns
         -------
-        results: FactorResults
+        FactorResults
+            Results class instance.
         """
         method = self.method.lower()
         if method == 'pa':
@@ -303,7 +304,8 @@ def loglike(self, par):
 
         Returns
         -------
-        loglike : float
+        float
+            The value of the log-likelihood evaluated at par.
         """
 
         if type(par) is np.ndarray:
@@ -346,7 +348,8 @@ def score(self, par):
 
         Returns
         -------
-        score : ndarray
+        ndarray
+            The score function evaluated at par.
         """
 
         if type(par) is np.ndarray:
@@ -508,7 +511,7 @@ class FactorResults(object):
     loadings_no_rot : ndarray
         Unrotated loadings, not available under maximum likelihood
         analysis.
-    eigenvalues : ndarray
+    eigenvals : ndarray
         The eigenvalues for a factor analysis obtained using
         principal components; not available under ML estimation.
     n_comp : int