displaying data

Question 1

apparent limit

Answer 1

when there are gaps between the intervals in the grouped frequency distribution

Question 2

real limit

Answer 2

when there are no gaps between the intervals in the grouped frequency distribution
those points falling one half measurement unit above or below a number
one decimal

Question 3

midpoint

Answer 3

the average of the upper and lower real limits
the point halfway within each class interval

Question 4

frequency

Answer 4

number of entries in a specific interval

Question 5

cumulative frequency

Answer 5

running total of frequencies
the frequency of all scores at or below a particular score

Question 6

relative frequency

Answer 6

percentage of time the raw scores occurs in the sample
- f/N *100

Question 7

cumulative percentage

Answer 7

CF * 100/ N, often closely associated with percentile
-the score at the nth percentile is the upper real limit of the interval

Question 8

bimodal

Answer 8

a distribution having 2 distinct peaks

Question 9

unimodal

Answer 9

a distribution having 1 distinct peaks

Question 10

modality

Answer 10

the number of meaningful peaks in a frequency distribution of data

Question 11

skewness

Answer 11

a measure of the degree to which a distribution is symmetrical

Question 12

positively skewed

Answer 12

a distribution that trails off to the right

Question 13

negatively skewed

Answer 13

a distribution that trails off to the left

Question 14

outlier

Answer 14

an extreme point that stands out from the rest of the distribution