Basic Statistics
this is found by adding up all data points and dividing by the number of data points
mean
the word we use to describe a probability of 0
impossible
In a binomial experiment there are this many outcomes.
2. success/failure
What is step 1 for hypothesis testing?
State hypotheses and level of significance.
Where is Delaney going for spring break?
Phoenix
this is the middle of the data points in order, or the average of the two middle values
median
the word we use to describe a probability of 100%
certain
In a normal distribution the graph has this general shape.
bell curve / mound shaped symmetric
What is step 3 for hypothesis testing?
Find p-value
How many days do seniors have left of school?
28
this is a measure of the spread of the data about the mean
standard deviation
the words we use to describe a probability of 50%
as likely as not
In a normal distribution the mean has a z score of ____
0
What is step 2 for hypothesis testing?
Calculate test statistic z
number of times Fowler girls basketball has won the state championship
4 - 1991, 2021, 2022, 2025
the span of the data from low to high
range
What is the probability we will play jeopardy in class today?
100%
In a normal distribution a z score represents ___________
number of standard deviations above or below the mean
What is step 5 for hypothesis testing
INTERPRET in context!
giraffes are this many times more likely to be struck by lightning than people.
30 times
the calculator function we use to find things like mean, standard deviation, etc.
1 variable statistics
What is the probability we will have a snow day today?
0%
In a binomial distribution p hat = ____________
r/n OR number of success over number of trials
What is step 4 for hypothesis testing?
Reject H0 if p-value below alpha
Fail to reject H0 if p-value above alpha
the square root of -1 is _____
i