Thankful for Statistics 12.02.24 Warm Up

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What is the probability of at least one event occurring when multiple trials are conducted?

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To find the probability of at least one event occurring, use the formula: P(at least one) = 1 - P(none). For example, if the probability of an event is p, then P(none) = (1-p)^n, where n is the number of trials.

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Define normal distribution in statistics.

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Normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean. It is characterized by its bell-shaped curve.

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What is the mean in a data set?

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The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

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CCSS.6.SP.B.5C

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What is standard deviation?

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Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation means that the values tend to be close to the mean, while a high standard deviation means that the values are spread out over a wider range.

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How do you calculate the percentile of a data set?

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To calculate the percentile, arrange the data in ascending order, then use the formula: P = (n/N) * 100, where P is the percentile, n is the number of values below the desired value, and N is the total number of values.

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CCSS.6.SP.B.5C

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What is a proportion in statistics?

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A proportion is a type of ratio that compares a part to the whole. It is expressed as a fraction, decimal, or percentage.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What does it mean if a data point is at the 79th percentile?

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If a data point is at the 79th percentile, it means that 79% of the data points fall below this value.

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CCSS.6.SP.B.5C

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Explain the concept of random selection in probability.

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Random selection is a process where each individual has an equal chance of being chosen. This method is used to ensure that the sample is representative of the population.

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CCSS.HSS.IC.B.3

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What is the formula for calculating probability?

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The formula for calculating probability is P(E) = Number of favorable outcomes / Total number of possible outcomes.

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CCSS.7.SP.C.7A

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Define the term 'sample size' in statistics.

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Sample size refers to the number of observations or data points collected in a survey or experiment. A larger sample size generally leads to more reliable results.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1