chapter 14/15

Question 1

your ____________ is used for recording information important to a study, such as design, procedure, and planned analysis

Answer 1

lab notebook

Question 2

___________ is the process of transcribing data from individual data sheets to a summary form

Answer 2

data reduction

Question 3

Initial recordings of data are generally done on sheets that record the responses of individual participants. Data sheets should have spaces to record ….. ?

Answer 3

the date, time, researcher’s name, condition,and any other identifying information

Question 4

A ________ is a record that specifies the variables of a study, the columns they occupy in the data file, and their possible values.

Answer 4

coding guide

Question 5

statistics that help us to draw conclusions about populations are called __________

Answer 5

inferential statistics

Question 6

________ are statistics that summarize a set of data

Answer 6

descriptive statistics

Question 7

a measure of the average score in a distribution, succ as the mean, median, or mode is referred to as a measure of _________

Answer 7

central tendency

Question 8

the ______ is the most common score in a frequency distribution

Answer 8

mode

Question 9

a measure of the degree of difference between scores in a distribution is referred to as a measure of _____________

Answer 9

variability

Question 10

the ________ is the middlemost score in a distribution

Answer 10

median

(number of scores + 1) / 2

Question 11

the ______ is the common average

Answer 11

mean

sum of scores / number of scores

Question 12

the range is the simplest measure of __________, it refers to the difference between the highest and lowest scores in a distribution

Answer 12

range

Question 13

a score below which a certain percentage of the cases in a distribution fall is called a ________

Answer 13

percentile

*** a percentile is a score, not a percentage

Question 14

the ________ is a measure of variability defined as the difference between the 75th percentile and the 25th percentile

Answer 14

interquartile range

*** it is a difference in scores, not percentages

Question 15

the __________ is simply half of the interquartile range

Answer 15

semi-interquartile range

Question 16

the average of the squared deviations from the mean is called the _______

Answer 16

variance

Question 17

__________ is the square root of the variance; a measure of variability in the same units as the scores being described

Answer 17

standard deviation

Question 18

the most commonly used measures of variability are the ________ and the ________

Answer 18

the variance and the standard deviation

Question 19

the _________ is the sum of the squared deviations from the mean

Answer 19

sum of squares