Valid claims
Valid-claims 256
Exercise Name: Valid claims
Math Missions: 7th grade (U.S.) Math Mission, 8th grade (U.S.) Math Mission High school statistics and probability Math Mission
Types of Problems: 2

The Valid claims exercise appears under the 7th grade (U.S.) Math Mission, 8th grade (U.S.) Math Mission and High school statistics and probability 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 user is asked to determine which of the claims is valid based on the results.
    Valid claims1

    Determine the right conclusion

  2. Determine which can provide a valid conclusion: This problem describes a situation where a researcher wants to find out information. The user is asked which of the sample selection methods would help the researcher to make a valid conclusion.
    Valid claims2

    Determine which can provide a valid conclusion


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.

Real-life Applications

  1. In Law, a valid claim is a "grievance that can be resolved by legal action." It is a claim that is not frivolous, nor is based on fraud. In some state court systems, a valid claim is called a Claim for relief or a Claim and delivery.
  2. Data and statistics appear in news reports and in the media every day.
  3. Many of the problems in this exercise could be viewed as real-life applications.
  4. Statistics can be seen more frequently than calculus in every day life.

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