Circles
the line across a circle going through its center
diameter
What is another word for the mean of a data set?
average
a graph that uses vertical or horizontal bars to display data
bar graph
a way to get a total by making four vertical marks, than making the fifth diagonally across the four
tally marks
How is pi calculated?
Divide the circle's radius by it's diameter.
the measure from the center of a circle to the outside edge
radius
A number that doesn't fit with the rest of the numbers in a data set is called ___________.
an outlier
The sums of the rows and columns in a two-way frequency table are called:
Marginal Frequency
__________ indicates up and down movement.
__________ indicates movement across.
vertical
horizontal
Explain how to find the range of a data set.
Subtract the least number from the greatest number.
the measure of the outside of a circle
the circumference
The item that is listed most often in a data set is the __________.
mode
Each Entry in the table is called ?
Joint frequency
a running total in which a new amount is added to a given amount repeatedly
cumulative
Explain how to find the mean of a data set.
Add all the numbers and divide by the amount of numbers that were added.
What is the formula for finding the area of a circle?
A = πr2
The mean, the median, the mode, and the range of a data set are called the _______________.
a bar graph that shows the frequency of data within equal intervals
histogram
the number of times something occurs
frequency
How would 76 be shown on a stem-and-leaf plot?
The 7 would be in the tens place on the left of the bar, and the 6 would be in the ones place on the right of the bar.
the ratio of a circle's circumference to its diameter
pi
Explain how to find the median of a data set when the set has an even number of items.
Add the two middle numbers together and divide by 2.
the best graph to show change over time
line graph
the space between marked values on the scale of a graph
interval
How does a bar graph, not started at zero, give a misleading picture of data?
When the lower part of the bar is missing, the differences in the bars are exaggerated or lessened.