7th Grade Math Data Analysis

Front

What is data analysis?

Back

Data analysis is the process of inspecting, cleansing, transforming, and modeling data to discover useful information, inform conclusions, and support decision-making.

Front

What is an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in a data set. It may indicate variability in the measurement or may be due to experimental error.

Front

How do you calculate the median of a data set?

Back

To calculate the median, arrange the data points in ascending order and find the middle value. If there is an even number of observations, the median is the average of the two middle values.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you determine the percentage of data below a certain value?

Back

To determine the percentage of data below a certain value, count the number of data points below that value, divide by the total number of data points, and multiply by 100.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set.

Front

What is the purpose of a box plot?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).

Front

What does it mean for data to be normally distributed?

Back

Data is normally distributed when it follows a bell-shaped curve, where most of the observations cluster around the central peak and probabilities for values further away from the mean taper off symmetrically.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts, with each part representing 25% of the data.