WHAT EXPLANATION CAN YOU GIVE FOR THE DROP IN THE CONVERSION RATE -BY APPROXIMATELY 5 POINTS- FROM LEADS TO MQLS BETWEEN THE MONTHS OF NOV14 AND DEC14?

the questions refer to the data in the following table, which shows the number of visits, Leads, MQLs and SQLs and evangelists from September 2014 to August 2015.

1. WHAT EXPLANATION CAN YOU GIVE FOR THE DROP-IN VISITS THAT EXISTS BETWEEN THE MONTHS OF SEP14 AND OCT14? AND HOW CAN IT BE THAT THE SAME NUMBER OF LEADS IS MAINTAINED?

*2. WHAT EXPLANATION CAN YOU GIVE FOR THE DROP IN THE CONVERSION RATE -BY APPROXIMATELY 5 POINTS- FROM LEADS TO MQLS BETWEEN THE MONTHS OF NOV14 AND DEC14?

*3. WHAT EXPLANATION CAN YOU GIVE FOR THE VARIABILITY OF MQL TO SQL CONVERSION RATES THROUGHOUT THE CHART PERIOD?