measures of central tendency and dispersion

Question 1

descriptive statistics

Answer 1

the use of graphs, tables, and summary statistics to identify trends and analyse sets of data

Question 2

measures of central tendency

Answer 2

the general term for any measure of the average value in a set of data

Question 3

mean

Answer 3

the arithmetic average calculated by adding up all the values in a set of data and dividing is by number of values

Question 4

median

Answer 4

the central value in a set of data when values are arranged from lowest to highest

Question 5

mode

Answer 5

most frequently occurring value in a set of data

Question 6

measures of dispersion

Answer 6

the general term for any measure of the spread or variation in a set of scores

Question 7

range

Answer 7

a simple calculation of the dispersion in a set of scores which is worked out by subtracting the lowest score from the highest score and adding 1 as a mathematical correction

Question 8

standard deviation

Answer 8

a sophisticated measure of dispersion in a set of scores - tells us by how much, on average, each score deviates from the mean