Statistics and Making Inferences

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What is a dot plot?

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A dot plot is a statistical chart that consists of dots representing the frequency of data points in a dataset. Each dot represents one observation.

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CCSS.6.SP.B.4

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What does it mean to make an inference in statistics?

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Making an inference means drawing a conclusion or making a judgment about a population based on a sample of data.

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How do you calculate the average (mean) of a dataset?

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To calculate the average, add all the numbers in the dataset together and then divide by the total number of values.

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What is the median in a dataset?

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The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

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What is a box plot?

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A box plot is a graphical representation of a dataset that shows its minimum, first quartile, median, third quartile, and maximum.

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What does variability in data mean?

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Variability refers to how spread out or dispersed the values in a dataset are. Greater variability means the values are more spread out.

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What is the difference between mean and median?

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The mean is the average of all values, while the median is the middle value. The mean can be affected by extreme values, while the median is not.

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How can you compare two datasets?

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You can compare two datasets by looking at measures such as mean, median, range, and variability.

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What is a sample in statistics?

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A sample is a subset of a population used to represent the whole population in statistical analysis.

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What does it mean if one group has a higher median than another?

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If one group has a higher median, it indicates that, on average, the values in that group are greater than those in the other group.

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