chapter 1-3

Question 1

the science (or math) of data

Answer 1

statistics

Question 2

research in which a treatment is applied and the effects are recorded

Answer 2

experiment

Question 3

the complete collection of all data that are of interest

Answer 3

population

Question 4

a study in which data are collected in the future from groups with common factors

Answer 4

prospective

Question 5

a sample in which results are collected based on easiness to gather

Answer 5

convenience

Question 6

a sample in which the population is divided into groups, and then all the subjects of just a few groups are studied

Answer 6

cluster

Question 7

a numerical measurement that describes a population

Answer 7

parameter

Question 8

data consisting of numbers representing counts or measurements

Answer 8

quantitative

Question 9

quantitative data that have a zero starting point, at which none of the quantity exists

Answer 9

ratio

Question 10

quantitative data that consists of individually separate and distinct values

Answer 10

discrete

Question 11

all the graphs that should only be used for categorical (qualitative) data

Answer 11

stemplot, pareto chart, pie chat, multiple bar graph and bar graph

Question 12

name the type of graph pictures below

Answer 12

histogram

Question 13

graph pictures below

Answer 13

pie chart

Question 14

find the class width

Answer 14

the first class mark plus the first on the second row

Question 15

find the class width of a set of data with the following attributions:
max- 100, min- 64, using 7 classes

Answer 15

range- max-min/number of classes
100-64/7= 5.14. round up to 6.

Question 16

determine how many rabbits were sampled in the study below

weights of rabbits
weight frequency
50-54 12
55-59 15
60-64 17
65-69 14
70-74 10

Answer 16

add up all the frequencies. 68.

Question 17

determine if the data below is symmetric, skewed left, or skewed right.

Answer 17

skewed left

Question 18

name the type of graph in the picture below

Answer 18

dotplot

Question 19

all the graphs listed below that should only be used for quantitative data.

Answer 19

histogram, relative frequency histogram, stemplot, time-series graph, frequency polygon, relative frequency polygon, scatter plot, ogive