Types of Data
Data that describes qualities or categories.
What is qualitative data?
A small part of a population used to represent the whole.
What is a sample?
A graph best for comparing categories.
What is a bar graph?
A trend that shows values increasing over time.
What is an increasing trend?
Circle graphs show this about a whole.
What are parts or percentages?
Data that is numerical and can be measured or counted.
What is quantitative data?
A sample in which every member has an equal chance of being chosen.
What is a random sample?
A graph best for showing change over time.
What is a line graph?
A point that does not fit the pattern of the data.
What is an outlier?
A full circle measures this many degrees.
What is 360 degrees?
Data that takes whole-number values, like number of siblings.
What is discrete data?
A sample that is unfair because it favours certain outcomes.
What is biased data?
A graph that shows parts of a whole.
What is a circle graph?
Looking at the overall pattern and direction of data is called this.
What is analyzing trends?
To find the angle for a sector, multiply the percent by this.
What is 360 degrees?
Data that can take any value within a range, like height or mass.
What is continuous data?
This term describes how often an event occurs compared to the total number of events.
What is relative frequency?
A graph best for showing relationships between two variables.
What is a scatter plot?
When a graph shows no clear pattern between variables, it has this.
What is no correlation?
The number that appears most often in a data set.
What is the mode?
Data created by someone else previously, such as from a website or book.
What is secondary data?
If an event occurs 6 times out of 30 trials, this is the relative frequency.
What is 0.2 or 20%?
A graph that uses intervals to display numerical data.
What is a histogram?
A graph where data is plotted with points to show relationships between variables.
What is a scatter plot?
This value can significantly change the mean of a data set.
What is an outlier?