Update app.py

app.py

@@ -302,7 +302,7 @@ def z_test_data(df):
     num_rows, num_cols = df.shape
     
     for i in range(num_rows -1):
-        for j in range(1, num_cols -1):
+        for j in range(num_cols -1):
             n1 = df.iloc[-1, -1]
             n2 = df.iloc[-1, j]
             p1 = df.iloc[i, -1]