Data Analysis Flashcard

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables. It helps in analyzing the relationship between the two variables.

Front

What does it mean if a student is more likely to own a smartphone based on survey results?

Back

It means that the data shows a higher percentage of that group (e.g., middle school students) owns smartphones compared to another group (e.g., elementary school students).

Front

How do you interpret a scatter plot?

Back

A scatter plot shows the relationship between two variables. Each point represents an observation. The pattern of points can indicate trends, correlations, or the absence of a relationship.

Front

What is a positive trend in a scatter plot?

Back

A positive trend occurs when, as one variable increases, the other variable also tends to increase, resulting in an upward slope.

Front

What is a negative trend in a scatter plot?

Back

A negative trend occurs when, as one variable increases, the other variable tends to decrease, resulting in a downward slope.

Front

What is an outlier in data analysis?

Back

An outlier is a data point that differs significantly from other observations. It may indicate variability in the measurement or may suggest a measurement error.

Front

What is a cluster in data analysis?

Back

A cluster is a group of data points that are closely grouped together in a scatter plot, indicating a concentration of values.

Front

What is a gap in data analysis?

Back

A gap is a space in the data where there are no observations. It indicates a range of values that are not represented in the dataset.

Front

How can you determine the best prediction for a value in a scatter plot?

Back

To determine the best prediction, look for the point on the trend line that corresponds to the given x-value and read the associated y-value.

Front

What does it mean if there is no trend in a scatter plot?

Back

No trend means that there is no discernible pattern in the data points, indicating that changes in one variable do not affect the other.