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 scatter plot shows a positive trend?

Back

A positive trend in a scatter plot indicates that as one variable increases, the other variable also tends to increase.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What is the purpose of surveying students about their preferences?

Back

Surveying students helps gather data on their preferences, which can be analyzed to understand trends and make informed decisions.

Front

What does it mean if a middle school student is more likely to own a smartphone than an elementary school student?

Back

It indicates that the probability of smartphone ownership is higher among middle school students compared to elementary school students.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that differs significantly from other observations in the dataset, potentially indicating variability or an error.

Front

What is a negative association in a scatter plot?

Back

A negative association means that as one variable increases, the other variable tends to decrease.

Front

What is the significance of a linear association in scatter plots?

Back

A linear association indicates that the relationship between the two variables can be represented by a straight line, suggesting a consistent pattern.

Front

What does it mean if a two-way table shows no association?

Back

No association means that there is no significant relationship between the two categorical variables being analyzed.

Front

What is the total number of students surveyed in the cafeteria line example?

Back

681 students were surveyed in the cafeteria line example.