Review Part 2

Front

What is a segmented bar graph?

Back

A segmented bar graph is a visual representation that shows the proportion of different categories within a whole, with each segment representing a category's contribution to the total.

Front

What is convenience sampling?

Back

Convenience sampling is a non-probability sampling technique where subjects are selected based on their easy availability and proximity to the researcher, rather than through random selection.

Front

What does a scatterplot represent?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data, showing the relationship or correlation between them.

Front

What does a correlation coefficient of 1 or -1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive correlation, while -1 indicates a perfect negative correlation between two variables.

Front

What is the purpose of a double-blind experiment?

Back

A double-blind experiment is designed to eliminate bias by ensuring that neither the participants nor the experimenters know who is receiving a particular treatment.

Front

What is the smallest deviation?

Back

The smallest deviation refers to the least amount of variation or spread in a set of data points, indicating that the data points are closely clustered around the mean.

Front

What is the significance of a correlation coefficient of 0?

Back

A correlation coefficient of 0 indicates no association or relationship between the two variables being analyzed.

Front

What is the difference between a box plot and a bar graph?

Back

A box plot displays the distribution of data based on a five-number summary (minimum, first quartile, median, third quartile, maximum), while a bar graph represents categorical data with rectangular bars.

Front

What is the importance of random sampling in surveys?

Back

Random sampling ensures that every individual has an equal chance of being selected, which helps to eliminate bias and makes the results more representative of the entire population.

Front

What is a frequency bar chart?

Back

A frequency bar chart is a graphical representation that shows the frequency of different categories of data, with bars representing the count of occurrences for each category.