When do you find facts and statistics most effective in a speech? When are facts and statistics not as effective?

Statistics are most effective in a speech when as stated by Coopman & Lull, “to support you main points and make transitions from one point to another.” I find statistics to be also effective when you are trying to move an audience or get there attentions. Statistics about loss of life and events that effect many people allow an audience to feel the impact of that event because the magnitude is brought to life with numbers. It also as stated by Coopman & Lull, “Provide good support for a claim and that this problem affects many Americans.” Facts are good to use because they show that you went beyond your personal knowledge of any given subject and are providing concrete evidence that your audience will find credible. Facts are not effective when also stated by Coopman & Lull, “Audiences do not always interpret facts the same way speakers do.” If you are trying to persuade an audience a statistic might be more effective in leading the audience your way. Either way your facts and statistics if used correctly can be effective.