Measures Central Tendency and Spread

Question 1

Center number

Answer 1

Median

Question 2

Number that appears most often

Answer 2

Mode

Question 3

No mode

Answer 3

Amodal

Question 4

Two modes

Answer 4

Bimodal

Question 5

Moves in the direction of the outliers

Answer 5

Mean

Question 6

Top 5 and lowest 5 percent of data are removed before average taken

Answer 6

Trimmed mean

Question 7

When are geometric means typically used

Answer 7

Exponential growth (ie bacterial colonies, drug half life)

Question 8

Difference between highest and lowest value

Answer 8

Range

Question 9

Variability among the data points

Answer 9

Variance

Question 10

Empiric rule

Answer 10

In a normal curve
68% of points within 1 SD
95% of points within 2 SD
99% of points within 3 SD

Question 11

Number of standard deviations a data point lies away from the mean

Answer 11

Z-score

Question 12

Data does not have an order, name only

Answer 12

Nominal

Question 13

Only measure of central tendency for nominal data

Answer 13

Mode

Question 14

Data with an order, but no standard difference between one number and the next (Ie pain scale)

Answer 14

Ordinal

Question 15

Measures of central tendency for ordinal data

Answer 15

Mode, median

Question 16

Numerical data with clear difference between numbers and can be placed in order, but have no meaningful 0 (or temp)

Answer 16

Interval data

Question 17

Measures central tendency for interval data

Answer 17

Mean, median, mode

Question 18

Numerical data, can be put in order, clear difference between two numbers, and have meaningful zero

Answer 18

Ratio data

Question 19

Measure central tendency ratio data

Answer 19

Mean, median, mode

Question 20

Data with whole numbers

Answer 20

Discrete data

Question 21

Data with intermediary values (decimals) run on scale

Answer 21

Continuous

Question 22

Nominal and ordinal data are

Answer 22

Nonmetric or categorical data

Question 23

Interval and ratio data are…

Answer 23

Numeric or metric data