METHODS AND APPARATUS TO CALCULATE A PROBABILITY OF INDEX CONSISTENCY

摘要

Methods, apparatus, systems and articles of manufacture are disclosed to calculate a probability of index consistency. An example method disclosed herein includes selecting a first benchmark audience rating and a first brand user rating, calculating a first ratio of the first benchmark audience rating and a first benchmark audience effective sample size, calculating a second ratio of the first brand user rating and a brand user effective sample size, calculating a standard error based on the first and second ratios and an index based on the first benchmark audience rating and the first brand user rating, and calculating a first consistency value based on the standard error.