Book Definitions
what is a box plot
a graph used to represent a data set when the data set contains a small number of values
what is the formula for the IQR
IQR=Q3-Q1
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}
15-8+5-(-7)
19
What happens when you have 2 or more consecutive absences?
what is an outlier
an extremely high or an extremely low data value when compare with the rest if the data
what is the formula for Range
range=highest value-lowest value
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
5 - (-3) + 8 - 15 + 2
3
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
what is median
is the midpoint of the data array
what is the formula for the midpoint
midpoint=lower boundary + upper boundary/2
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
15 + 8 + 4 - (-15) - 12 - (-4)
34
What happens if you're constantly on your phone or not doing the work?
You might be marked as absent :(
what is mean
it is the sum of all values, divided by the total number of values
what is the formula for width
width= range/number of classes
A coin is tossed three times. Find the probability of getting a tail on the first toss, the second toss, or both.
3/4
3x2 + 6x - 3
when x = 3
42
After how many minutes will you be considered absent if you're not in class?
After 10 - 15 minutes!
what is mode
a value that occurs most often in the data set
what is the formula for mean
mean=all values/total
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
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
What's your PLTL name?
Natalie Arellano