Units 1-3
If the test scores are 70, 80, and 90, what measure of center would be found by adding them and dividing by 3?
What is the mean?
What graph is best used to show the relationship between two quantitative variables?
Scatterplot
When rolling a fair six-sided die, what is the probability of rolling an even number?
1/2
The entire group a researcher wants to study.
Population
What does Ms. Jin give a 0 for in ap classroom for?
For finishing a 40-question assignment in 5 minutes
Which measure of center is least affected by extreme values or outliers?
What is the median?
: A correlation coefficient of -0.92 describes what type of relationship?
Strong Negative Correlation
A probability of 1 means an event is _____.
Certain
A smaller group selected from the population.
Sample
What does Ms. Jin give LJ when he talks out loud.
-5 points
The scores are 5, 7, 7, 8, 10. Which measure of center is equal to 7?
What is the mode?
A data point that falls far away from the overall pattern is called a(n) _____.
Outlier
According to the Empirical Rule, about what percent of data falls within 1 standard deviation of the mean?
68%
A sampling method where every member has an equal chance of being selected.
Simple Random Sample
Who's most likely to ask for answers out loud during a test.
LJ
If the smallest value is 12 and the largest value is 45, what is the range?
33
Ice cream sales and shark attacks both increase during the summer. Does this mean one causes the other?
According to the Empirical Rule, about what percent of data falls within 2 standard deviations of the mean?
95%
A survey only asks students leaving the gym about school lunches. What issue does this create?
Bias
What does Ms. Jin offer every day
CANDYYYY!!!!
A distribution has a mean of 85 and a median of 72. Is it skewed left or right?
Right
A correlation coefficient of 0 indicates what type of linear relationship?
No linear relationship
A student scores 2 standard deviations above the mean. Approximately what percentage of students scored higher?
2.5%
A poll surveys 2,000 voters to predict an election. The 2,000 voters are the _____.
Sample
What does Ms. Jin say about the questions we ask in test
Only 3 questions per test( Proceeds to answer questions to half the class)