# 7th Grade Statistics and Probability

## CCSS Math Practice

This quiz illustrates the range of difficulty expected by the following Common Core State (CCS) standards:

 Question Common Core Standard # CCSS Math Excerpt 1 7.SP.1 ...understand that statistics can be used to gain information about a population by examining a sample of the population... 2 7.SP.6 ...approximate the probability of a chance event by collecting data on the chance process that produces it and observing its long-run relative frequency, and predict the approximate relative frequency given the probability... 3 7.SP.7a ...develop a uniform probability model by assigning equal probability to all outcomes, and use the model to determine probabilities of events... 4 7.SP.8c ...design and use a simulation to generate frequencies for compound events... 5 7.SP.7b ...develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process...

Question 1: A local newspaper of a New Mexico town intends to find if the mayor of the town is popular with its adult citizens. Which of the following samples could be used by the newspaper?

Question 2: Estimate the number of times you have to throw a dice in order to roll the number six 50 times?

Question 3: A student is randomly selected from a class of 32 students. What is the probability that the selected student is a boy, if there are 20 girls in the class?

Question 4: A number of five rabbits are randomly selected for a behavioral test out of a group of 10 rabbits. If 60% of rabbits are male, what is the probability that it will take at least 4 selections to find a male?

Question 5: A quarter coin is tossed two times. What is the probability that the coin will land heads up both times? .

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