Describing Data
The most precise
123 +/- 0.01
195 +/- 0.018
What is...
123 +/- 0.01
Mutually exclusive vs Independent events
What is..
Mutually exclusive (events cannot happen at the same time)
Independent (when outcome of one event does not influence the outcome of another)
SOLVE:
(8)
(5)
Pretend that there is one giant parenthesis around the 5 and the 3...you know what I am talking about!!! >:C
What is...56
Xi
What is raw data?
A P-Value of 0.018
Mean=90
Mode=94
Median=85
What is right skewed?
P(liking popcorn|likes watching movies)
What is...The probability of liking popcorn given that the person likes watching movies
The frequency table of a random sample shows that finding 8 flowers per quadrant had an expected probability of 0.0429. If you sampled this population again, how many flowers out of 628 would you expect to have 8 flowers per quadrant?
What is... 26.94
The number found by using the z-table
What is the proportion to the LEFT of the z-score
I think that my pet fish has no preference between fish food brand A and fish food brand B
I want to see if music affects plant growth. I play rock and classical music to my plants and then measure the height of the plant in cm. Identify the types of variables.
What is...
Music->categorical, explanatory, nominal
Cm->numerical, continuous, response.
What are dependent events?
CD -> greater than 1
CD->less than 1
CD = 1
What is...
(Clumped) CD -> greater than 1
(Dispersed) CD->less than 1
(Random) CD = 1
Mean=180 inches, 1SD=10 inches
How many inches is 2 SD above the mean?
What is...200 inches
P-Value
What is...Probability of getting the test statistic or more extreme assuming that the null hypothesis is true
You and your lab partners all measure the same thing but you find out that the values are not similar
What is Sampling error
Name the probability rule: I want to know the probability of blindly selecting a red shirt the first day, a green shirt the second day, and then a blue shirt the third day from my closet. (Assume that every shirt that I wore once will not return to the closet and will go to laundry)
What is...sampling without replacement
Compare and Contrast Binomial and Poisson
What is ...
Binomial looks at the prob of X number of successes out of a certain number of trials. Poisson looks at probability of getting X number of individuals per space or time
Proportions will ALWAYS be smaller than finding a single individual at this extreme
What is...The sampling distribution from a normal distribution
Volunteers decide to participate in a study that tests if men and women have different pain tolerances.
State null and alt hypothesis
What is...
Null: Women and men have the same level of pain tolerance
Alt: Men and women have different levels of pain tolerance
Explain how you find the mean and median of a frequency table
What is..
mean: mult both columns and add each number. Then divide by total to find average
Median: use (n+1)/2 OR (n+2)/2 and (n/2) to find middle digit of total frequency. Use middle value to find median.
What is the probability choosing from a deck of cards and getting a red card or an ace?
What is 28/52
Suppose you randomly sample 6 rats from a population where each rat has a probability of 0.38 of knowing how to cook a five star meal. What is the probability that exactly 2 rats can cook a five star meal?
What is... 0.32
Find the proportion above 160
180 = mean
SD=10
Explain the difference between a one tailed and a two tailed test.
What is...
One tailed: Used to test if test statistic differs in a specific direction
Two tailed: Used to test if test statistic differs in either direction.