Basic Stats
The biggest number minus the smallest number.
What is the range?
A graph that uses vertical bars to show how many things are in each category.
What is a histogram?
What does the % sign mean?
The symbol means "less than or equal to."
What is <= ?
It tells what number, or numbers, occurs most often, in a set of numbers (i.e., statistical values).
What is a mode?
It uses dots or Xs, stacked up on top of each other, to display how many things you have for each number.
What is a dot plot?
It tells how much a change there was, going from one number to another.
What is a percent change?
The order is PEMDAS.
What is the order of operations?
It is the median of the lower half of some data values.
What is Q1?
It puts part of a number on one side of a line, and the other part of the number on the other side.
What is a stem-and-leaf plot?
It is a formula that lets us solve basic percent problems.
What is is/of = %/100?
Solve for x: ax + b = c.
x = (c = b)/a
It tells how what the middle number in a set of data values is.
What is the median?
What is the mean, median, and mode of the following numbers? 98, 101, 97, 112, 104, 101, 109.
The mean is 103.14, the median is 101, the mode is 101.
It tells how many out of 100.
What is a percent?
You flip the inequality sign.
What do you do when you multiply or divide both sides of an inequality by a negative?
It tells how far apart the middle 50% of some data values are.
What is an IQR?
This bar(s) of a histogram tells you what the mode is.
What does the highest bar of a histogram tell you?
What is the percent change if your salary grows from $98,000 to $103,400?
The percent change is 5.51%.
Solve for y: ry - ay = XT
y = XT/(r - a)