Book Definitions
Formulas!
Week 6-8 problems
Easy Math!
PLTL Rules
100

what is a box plot

a graph used to represent a data set when the data set contains a small number of values

100

what is the formula for the IQR

IQR=Q3-Q1

100

Donna will toss a coin and record the toss as heads (H) or tails (T).  Then, she will randomly pick a card from a box that has four cards numbered 1, 2, 3, and 4, and record the number chosen.

Use the format H1 to indicate that the coin toss is heads and the number chosen is 1.

Describe the sample space of Donna's experience.

{H1, H2, H3, H4, T1, T2, T3, T4}

100

15-8+5-(-7)

19

100

What happens  when you have 2 or more consecutive absences?

Your PLTL leader will start sending you emails with warnings
200

what is an outlier

an extremely high or an extremely low data value when compare with the rest if the data

200

what is the formula for Range 

range=highest value-lowest value

200


The population full-time equivalent number of students (FTES) at Lake Tahoe Community College for 2005-2006 through 2010-2011 was given in an updated report. The data are reported here.

Year 2005-06 2006-07 2007-08 2008-09 2009-10 2010-11 

Total FTES 1,585 1,690 1,735 1,935 2,021 1,890 

Calculate the median

median=1812.5

200

5 - (-3) + 8 - 15 + 2

3

200

What do you have to do if you are sick or have an emergency and you cannot attend the PLTL session?

Email the professor with an excuse and CC your PLTL leader

300

what is median

is the midpoint of the data array

300

what is the formula for the midpoint

midpoint=lower boundary + upper boundary/2

300

The population full-time equivalent number of students (FTES) at Lake Tahoe Community College for 2005-2006 through 2010-2011 was given in an updated report. The data are reported here.

 Year 2005-06 2006-07 2007-08 2008-09 2009-10 2010-11 

Total FTES 1,585 1,690 1,735 1,935 2,021 1,890 

Calculate the mean

mean=1809.3

300

15 + 8 + 4 - (-15) - 12 - (-4)

34

300

What happens if you're constantly on your phone or not doing the work?

You might be marked as absent :(

400

what is mean

it is the sum of all values, divided by the total number of values

400

what is the formula for width 

width= range/number of classes

400

A coin is tossed three times. Find the probability of getting a tail on the first toss, the second toss, or both. 

3/4

400

3x2 + 6x - 3

when x = 3

42

400

After how many minutes will you be considered absent if you're not in class?

After 10 - 15 minutes!

500

what is mode

a value that occurs most often in the data set

500

what is the formula for mean

mean=all values/total 

500

The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest. 16; 17; 19; 20; 20; 21; 22; 23; 24; 24; 24; 25; 25; 26; 26; 26; 27; 28; 29; 32; 33; 33; 34; 35; 37; 39; 40

 Identify the median

median=26

500

At the beginning of the month, your account balance was $94. During the month, you deposited $562 and wrote a check for $474. What was your balance at the end of the month?

182

500

What's your PLTL name?

Natalie Arellano