Mean,Median,Mode
What do you call the average of a data set?
Mean
What type of graph uses bars to show data?
Bar graph
What is the probability of rolling a 1 on a fair die?
1/6
What is a group chosen from a population called?
Sample
Data that is described using numbers is called what?
Quantitative data
What is the middle number in a data set called?
Median
What graph shows parts of a whole using slices?
Pie chart
Probability is always between what two numbers?
0 and 1
A survey where everyone in the population is asked is called what?
Census
What is the term for how spread out data is?
Variability
What happens to the mean when you add an extreme outlier?
It gets pulled toward the outlier
What graph is best for showing change over time?
Line graph
Two events that cannot happen at the same time are called what?
Mutually exclusive
Choosing people randomly from a population helps reduce what?
Bias
What is a number that summarizes a data set called?
Statistic
If the mean is much higher than the median, what shape is the distribution?
Skewed right
What type of graph is best for showing frequency of data intervals?
Histogram
What is the probability of NOT rolling a 6 on a die?
5/6
What type of sampling gives every person an equal chance of being selected?
Simple random sampling
What do you call the entire group being studied?
Population
A data set is: 2, 3, 3, 4, 100. What is the best measure of center and why?
Median, because 100 is an outlier and skews the mean
What can be misleading about bar graphs?
The scale can exaggerate differences
If P(A)=0.3 and P(B)=0.5 and they are independent, what is P(A and B)?
0.15
Why is convenience sampling not reliable?
it creates bias and doesn’t represent the population
What does “correlation does NOT imply what?”
Causation