Bivariate Analysis and Earth Geometry Quiz

What is the primary purpose of constructing a two-way frequency table?

• To determine the mean of a dataset

• To display the frequency of data points across two categorical variables

• To calculate the median of a dataset

• To find the mode of a dataset

Answer explanation

The primary purpose of constructing a two-way frequency table is to display the frequency of data points across two categorical variables, allowing for a clear comparison and analysis of the relationship between them.

To calculate the row sum in a two-way frequency table, you need to add all the values in a (a)  

• Add all the values in a column
• Add all the values in a row
• Subtract the smallest value from th
• Multiply all the values in a row

What does a correlation coefficient (r) of -0.9 indicate?

• A positive, moderate, linear relationship

• A negative, weak linear relationship

• No linear relationship

• A negative, strong linear relationship

Which of the following is a key feature of a residual plot that suggests a linear model is appropriate?

• A clear pattern in the residuals

• Residuals that are randomly scattered

• Residuals that form a curve

• Residuals that increase with the independent variable

How is angular distance between two places on the same meridian calculated?

• By multiplying the angular distance by 111.2

• By dividing the angular distance by 111.2

• By adding 111.2 to the angular distance

• By subtracting 111.2 from the angular distance

The correlation coefficient (r) is used to (a)   the strength and direction of a linear relationship between two variables.

• To measure the central tendency of
• To quantify the strength and direct
• To determine the range of a dataset
• To calculate the variance of a data

What is the number of degrees of longitude for a time difference of one hour?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

Which of the following best describes a two-way frequency table?

• A table that shows the frequency of a single variable

• A table that shows the frequency of two categorical variables

• A table that shows the frequency of numerical data

• A table that shows the frequency of continuous data

What does a positive correlation coefficient indicate?

• As one variable increases, the other decreases

• As one variable increases, the other also increases

• No relationship between the variables

• A perfect negative relationship

In a two-way frequency table, what does a high percentage in a particular cell suggest?

• A weak association between the variables

• A strong association between the variables

• No association between the variables

• A random association between the variables