Distribution and Plots

Question 1

Describing distribution

Answer 1

Shape, center, spread, outliers, what does the data mean in this context

Question 2

One clear peak

Answer 2

Unimodal

Question 3

Two clear peaks

Answer 3

Bimodal

Question 4

All have same frequency

Answer 4

Uniform

Question 5

Area under the curve is 1

Answer 5

Normal (bell curve)

Question 6

Left mirrors the right and mean is median

Answer 6

Symmetric

Question 7

Mean is to the left of median and tail is longer to the left

Answer 7

Left skewed

Question 8

Mean is to the right of median and tail is longer to the right

Answer 8

Right skewed

Question 9

Center for symmetric

Answer 9

Mean

Question 10

Center for skewed

Answer 10

Median

Question 11

Center for mode

Answer 11

Bimodal may have bimode

Question 12

Spread for skewed

Answer 12

IQR

Question 13

Spread for symmetric

Answer 13

Stat, list, math, std

Question 14

Higher frequencies away from the median means _ standard deviation.

Answer 14

Higher

Question 15

Outliers

Answer 15

Q1-1.5(IQR)

Q3+1.5(IQR)

Question 16

_ _

• Min
• Q1
• Med
• Q2
• Max
• Outliers can be as points in modified _ _

Answer 16

Box plot

Question 17

Inner quartile range

Answer 17

Q3-Q1

Question 18

Marginal distribution

Answer 18

Margin/total

Question 19

Conditional distribution

Answer 19

Condition/margin

Question 20

P(x|y) means the _ of x condition given y condition.

Answer 20

Probability

Question 21

Always assume _ until proven otherwise.

Answer 21

Independent

Question 22

Conditional distribution of x in y

Answer 22

X values in the y row divided by the y total

Question 23

Stem and leaf plot

Answer 23

Make sure to put key

Question 24

Histogram

• X is _
• Stat, edit, stat plot, plot 1, on, histogram, x list: L1, Freq: 1, No values in y=, Zoom 9

Answer 24

Frequency

Question 25

Quantitative

• Average
• Discrete
  
  • Whole number
• Continuous
  
  • Measured to an arbitrary amount

Answer 25

Numbers

Question 26

Categorical

• Proportions
• Percent

Answer 26

Categories

Question 27

If standard deviation is 0 then all of the observations are the _.

Answer 27

Same