### Transcription of FINDING RANGE, INTERQUARTILE RANGE, …

1 **FINDING** RANGE, **INTERQUARTILE** RANGE, VARIANCE, AND STANDARD **deviation** . WITH A TI-83 OR TI-84. DATA. Consider the following data: 15 20 25 25 27 28 30 34. Find range, **INTERQUARTILE** range, variance, and standard **deviation** . ENTERING DATA. Step 1. Press the key that reads: STAT. Step 2. Press the key that reads: ENTER. Step 3. Record your data on list 1 (L1). **FINDING** STANDARD **deviation** , RANGE AND **INTERQUARTILE** RANGE. Step 1. When you are done entering data, press STAT and go to CALC. Step 2. Highlight the first option, 1-Var Stats, and press ENTER. Step 3. Press 2ND and 1 (because we want to use list 1). Step 4. Press ENTER You should see something like this: We have the standard **deviation** , To find Q1 and Q3 we only need to scroll down (just press the key with an arrow pointing down), you should see something like this: Range = MAX min = 34 15 = 19.

2 **INTERQUARTILE** Range = IQR = Q3 Q1 = 29 = We are done!!