We are learning to collect and record data in
frequency tables and line plots.
Frequency tables help us to organize data so that we can easily make a line plot. The tally marks represent the amount of
times that data point occurred. In the example below, the tally marks represent the number of people who exercised that
particular amount of times per week.
A line plot is a display of data along a number line with Xs or dots recorded above the responses to indicate the number
of occurrences a response appears in the data set. The Xs or dots represent the frequency. A line plot can have an
outlier. An outlier is a number that is much greater or much less than the other numbers in the data set. It is important for
a line to plot to have a title and a label of the x-axis to provide the reader an overview of what is being displayed.
Example of an outlier: 3 is an outlier in the example on the left.
Practice Problems
Create a frequency table and a line plot to display the data. Then answer the questions.
We are learning to interpret the collected data
results.
Remember: Most common is different from greatest amount. If they ask for the most
common, you are looking for which data point has the most x’s. If they ask for the
greatest value, you’re looking for the biggest number on the number line that has an x.
What is the most common distance from school?
What is the greatest distance from school?
How far away from the school is the closest bus rider?
How many students were surveyed in this problem?
We are learning to read and analyze line plots.
When asking for the total, you need to multiply the number of Xs by the corresponding value. Then, you need
to add all of those values up.
We are learning to solve context situations using
data in a line plot.
We are learning to use the order of operations to
simplify expressions.
We are learning to evaluate/simplify expressions
that have more than one operation.
● Circling the terms in an expression can help you make sure you’re following the correct order
of operations.
● A term is any number(s) separated by an addition or subtraction sign.
● See how the terms are circled in the following expressions:
● After circling the terms, you can simplify the expressions, then add or subtract left to right.
We are learning to simplify expressions that
include grouping symbols (parentheses, brackets,
braces).
We are learning to write numerical expressions.
We are learning to interpret numerical
expressions.
Match the following descriptions with the appropriate numerical expression: