Vocabulary

Frequency and graphs

Spread and linear equations

Boxplots

Measures of Center and Skewness

100

Types of Data

Qualitative, Quantitative

100

What does a stem and leaf plot display

distribution

100

How many equations are there for standard deviation

2, population and sample

100

Five number summary

minimum, Q1, median, Q3, maximum

100

What are the measures of center

Mean, mode, median

200

Four Levels of Measurement

Nominal, Ordinal, Ratio, interval

200

Line graph represents

data that varies over time

200

What is the linear equation (Statistically)

y=a+bx

200

What are percentiles used for

to compare and interpret data

200

The mean is

the best estimate for the data set

300

What are the different random sampling methods

simple random sampling, stratified sampling, cluster sampling, and systematic sampling.

300

Bar graphs show

comparison of data (categorical)

300

When the data is concentrated to the mean the standard deviation is?

Small, not spread out

300

How do you calculate IQR

Q3-Q1

300

The median is better

for when there are outliers

400

Where does data come from

Sample or population

400

What kind of graph do you use for frequency distribution.

Histogram

400

What is variance

average of the squares of the deviations

400

How much data lies above Q3

75%

400

What are the different kinds of distribution

left skewed, right skewed, symmetrical

500

How can we eliminate lurking variables

Use of different treatment groups

500

What are the different parts you can see in a frequency table

frequency, cumulative frequency, relative frequency, cumulative relative frequency

500

linear regression for two variables is based on

a linear equation with one independent variable

500

How do you determine outliers

Q3+IQR(1.5)

Q1-IQR(1.5)

500

Left skew indicates that the mean

is less than the median

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