STUDY.COM BUS 212-CHAPTER 4
What is the relationship between two variables or sets of data?
Correlation
When a data set is visually symmetrical, what occurs all at the same point?
The mean, median, and mode
What can we show using a histogram?
The mode of the data set.
What is the easiest way to shift between basic plot types in Excel?
With the chart selected, click on a different chart type.
The box in a box plot represents what portion of the data?
the middle 50%
In a normal data distribution with a symmetric bell curve, what is the skewness?
zero
What do we call areas in a data set where no observations have been made?
Gaps
What is a graphical representation of the distribution of data?
Histogram
In Excel, ''Column'' or ''Bar'' refers to what type of statistical data display?
Histograms
What is a condition or piece of data in an experiment that can be controlled or changed?
Independent variable
Using the box plot provided, what is the rectangle circled in red?
Interquartile range
Mrs. Honey gave her class a very easy math test to bring their overall grades up. Though, one person did not do as well as the others. Find the skew of the test scores of these 6 students:
-1.03
Find the skew of this data set: 1,2,3,4,5,6
0
What is the shape of a graph that peaks to the left or the right of the center?
Skewed
A statistician makes a graph, which includes a shape that's almost mirrored perfectly across a line, but not quite. How should we describe the shape?
Symmetrical
Why might we represent a data set with a box plot?
Because we want to see the data set's quartiles, minimum, and maximum values on a number line.
What is a graph of ordered pairs showing a relationship between two sets of data?
Scatterplot
Once a plot has been created, how do you access all of the display options for that plot?
Use the right mouse button
What field of mathematics often uses data distributions?
statistics
Using the box plot provided, what is the vertical line circled in red?
Quartile 3
A graph that peaks to the left or the right of the center is known as _____.
Skewed
In a 100% stacked histogram, which one of the following data attributes is not easily noticeable?
The total data count
Box plots are also called _____.
box-and-whisker plots
What type of data distribution is represented in this image?
histogram
Which data distribution would be useful for showing frequencies of a large set of data?
histogram
Histograms are very similar to what other graphical representation of numbers?
Bar graphs
If a data set has two different modes, then what is it?
Bimodal
What do we call two sets of variables that can change and are compared to find relationships?
Bivariate data
What is the term for data that is grouped by type or object, not by numbers?
Categorical
What menu option is used in Excel for creating graphs and plots of data?
Chart
Using the box plot provided, what is the vertical line circled in red?
Extreme minimum
Using the box plot provided, what is the vertical line circled in red?
Median
A dot plot is a visual representation of data using intervals or categories of variables, with each dot representing _____.
an observation in the data
Xavier has always been a prodigy, smarter than everyone in his classes. His science teacher gave his class a test and everyone failed but him. He got a 94 but everyone else got scores in the 50 and 60 range (out of 100). Find the skew of the following data set of Xavier and 7 of his fellow students: 53, 58, 61, 62, 62, 65, 69, 94
0.84
How are independent variables and dependent variables different?
As an experimenter, you can directly change the value of an independent variable, but the value of a dependent variable depends on the outcome of the experiment.
What is the term for the type of data that is measurable?
Numerical
Which axis of a histogram usually shows the categories into which the various members of a data set fall?
The horizontal axis
Susanne has a set of data she is using to create a histogram. If the set of numbers below is her data set, then which number in the data set will create the highest peak? 2, 2, 3, 5, 6, 7, 8, 6, 5, 2, 3, 4, 2, 5, 6, 2
2
In the graph indicating a negative distribution and skewed bell curve, what do A, B and C represent, respectively?
Mean, Median, Mode
A student makes a dot plot to represent the grades their classmates got on the last test, and finds that it makes a shape that is mirrored nearly perfectly across a line at the mean. Is this shape symmetrical? Why or why not?
Yes, it's symmetrical, because the shape is mirrored nearly perfectly across a line.
