Today we skipped mental mathand went straight into correcting questions 2, 9, and 13. We still have time to work on 1-12 from the back of our binomial distribution booklets. Mr.maks recorded our corrections and as well as some new stuff that mr.maks made sure to inform us that around 40% of students BOMB this part on the provincial math exam and there is only about 30% of students from this school writing it... or something like that. SO this is pretty much vital information for us to pass our exams.
Our test is sometime after christmas though!
Don't forget grad hams tomorrow
Wednesday, December 16, 2009
Thursday, December 10, 2009
normal distribution
No mental math today, we started off with learning about
NORMAL DISTRIBUTIONS: Frequency polygons/histograms
check out this website for histograms http://illuminations.nctm.org/activitydetail.aspx?id=78
*created from (theoretically), a histogram situation, with these characteristics(MANY natural phenomena follow a normal distribution)
Characteristics of NORMAL DISTRIBUTION
-theoretical (approximation)
-symmetry aout mean
-follow this rule
68-95-99.7
Another website to check out
www.ronblond.com
NORMAL DISTRIBUTIONS: Frequency polygons/histograms
check out this website for histograms http://illuminations.nctm.org/activitydetail.aspx?id=78
*created from (theoretically), a histogram situation, with these characteristics(MANY natural phenomena follow a normal distribution)
Characteristics of NORMAL DISTRIBUTION
-theoretical (approximation)
-symmetry aout mean
-follow this rule
68-95-99.7
Another website to check out
www.ronblond.com
Tuesday, December 8, 2009
ungrouped vs grouped data
9a and 13 a is our homework. We learned about ungrouped vs grouped data.
up till now our examples have been ungrouped (i.e all data values are present and accounted for)
HOW TO PUT GROUPED DATA INTO CALC.
make a frequency table
put the two lists into your calc
stat
calc
1-var stats
l1, l2
ENTER
up till now our examples have been ungrouped (i.e all data values are present and accounted for)
HOW TO PUT GROUPED DATA INTO CALC.
make a frequency table
put the two lists into your calc
stat
calc
1-var stats
l1, l2
ENTER
Monday, December 7, 2009
population standard deviation
Population Standard Deviation
-measure of variability within a data set
-measures how varied the data set is, relative to itself
(How spread out the numbers are)
The formula for finding this would be:
"The square root of the quotient between the sum of all x subtract x bar squared divided by n."
HOMEWORK:
1. Find data
2. Calculate the population standard deviation
mean= x bar
-measure of variability within a data set
-measures how varied the data set is, relative to itself
(How spread out the numbers are)
The formula for finding this would be:
"The square root of the quotient between the sum of all x subtract x bar squared divided by n."
HOMEWORK:
1. Find data
2. Calculate the population standard deviation
mean= x bar
Wednesday, December 2, 2009
probability test review
Today, all class we went over questions on probability from other tests.
On this test there will be:
"Pathways" Pascal's triangle
F.C.P (fundamental counting principle)
perms and coms
Sample space
(representation)
tree diagram complements
Independent/dependent events
"with replacement"
resetting probability conditions
Mutually inclusive/exclusive
This should be fun!
On this test there will be:
"Pathways" Pascal's triangle
F.C.P (fundamental counting principle)
perms and coms
Sample space
(representation)
tree diagram complements
Independent/dependent events
"with replacement"
resetting probability conditions
Mutually inclusive/exclusive
This should be fun!
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