Valid claims

The topic  appears under the 7th Grade Math Mission. This exercise helps develop critical thinking regarding claims.

Types of Problems
There are two types of problems in this exercise:


 * 1) Determine the right conclusion: This problem describes the results of a statistical study. The student is asked to determine which of the claims is valid based on the results.Vc1.png
 * 2) Determine which can provide a valid conclusion: This problem describes a situation where a researcher wants to find out information. The student is asked which of the sample selection methods would help the researcher to make a valid conclusion.Vc2.png

Strategies
Knowledge of sampling methods and collection statistics helps to understand the theory behind this exercise but is not necessary to complete it.
 * 1) When collecting data it is important to avoid biases.
 * 2) Samples that favor certain groups are biased and those that do not are unbiased.
 * 3) A calculated statistic from a sample gives an estimate to the true value of a population parameter.