What is it?
The IQR describes the middle 50% of values when ordered from lowest to highest. To find the interquartile range (IQR), first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.
How do you find IQR?
<em>Step 1: Put the numbers in order. ...</em>
<em>Step 2: Find the median. ...</em>
<em>Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot. ...</em>
<em>Step 4: Find Q1 and Q3. ...</em>
<em>Step 5: Subtract Q1 from Q3 to find the interquartile range.</em>
This is geometric with a common ratio of 3 (3/1 = 3 and 9/3 = 3 etc)
the formula for the nth term is
an = 3^(n-1)
About 73%
110 more people came next day cuz 260-150=110
The amount added over the first day with give the changed percentage
0.733333333 or about 73%
Proportional relationships. You may recall that in proportional relationships, the variables in the problem are related by a constant factor or ration.
The slope is 2/5 or 0.4!
To figure out slope from a graph use the formula y2- y1/ x2- x1
We can substitute the numbers and letters in the formula for the ones on the chart
For example, x1 is -3 because it is the first “x” value on the chart. X2 is 2 because it is the second “x” value on the chart. Y1 is 0 because it is the first “y” value on the chart and y2 is 2 because it is the second “y” value on the chart.
To set up the formula get what is labeled as y2, 2, and subtract it by the y1, 0, that equals 2. Next, get your x2, 2, and subtract it by your x1, -3. The answer being 5.
Turn those calculations into a fraction- 2/5 or 0.4 if you simplify it
If you don’t get it at first don’t worry it takes practice!