Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
100
What is data?
Values along with their contex.
100
What is this kind of chart called?
Pie chart
100
What does SOCS stand for?
Shape, outliers, center, spread
100
What must we describe for BOTH distributions when comparing distributions?
SOCS in context for BOTH sets of data/distributions
100
Describe the shape of a normal distribution.
Symmetric, single-peaked, and bell-shaped
200
What is the definition of statistics?
The science and art of collecting, analyzing, and drawing conclusions from data.
200
What is marginal distribution?
Compares to the entire group.
200
What are the five values that make up a box plot?
Median, minimum, lower quartile, upper quartile, maximum
200
Men’s distribution of times social media is checked is unimodal and skewed left whereas womens distribution of times social media is checked is bimodal and skewed right
200
How do you calculate a Z score?
z = (x- mean)/standard deviation
300
Height, weight, and race are all examples of...?
Variables.
300
What is one sign that a relative frequency table is wrong?
Doesn't add up to 100
300
Describe a graph that is skewed right.
The center is closer to the lower values in the data set with one or a couple outliers far to the right.
300
Why should we use a back to back histogram?
Because it allows us to easily see and compare distributions.
300
Approximately what percent of observations fall within two standard deviations from the mean on a normal distribution?
95% of observations
400
Is the length of hair in cm categorical or quantitative?
Quanatative.
400
What type of table helps us see how one variable is related to another?
Contingency tables
400
What is the median of this stem and leaf plot?
22
400
Pulse before exercise median- 68. Pulse after exercise median 108, after is greater.
400
How is the variance on a normal distribution impacted when data is multiplied by a factor of c?
The variance is multiplied by c squared
500
What are the 5 W's and (one) H
Who
What
Where
When
Why
How
500
Percentage of girls under the age of 18 who reported their favorite drink was Diet Coke is an example of?
Conditional distribution
500
What is the standard way of determining if a value is an outlier?
1.5 x IQR away from the upper or lower quartile
500
Do you get on average greater gas milage in the city or the highway and how do you know?
Highway because the median is greater.
500
What does a Z score allow us to do?
Allows comparisons across values that are measured on different scales and from different populations