Lesson 2: Laboratory Statistics

Question 1

T/F. First task in analysis is to provide a consistent framework for calculating the data and compare how close the different measurements are to one another.

Answer 1

False.

First task in analysis is to provide a description of the magnitude of the observations and how close the different measurements are to one another.

Question 2

it is the quantification of information in meaningful summaries and comparisons

Answer 2

laboratory statistics

Question 3

the comparison of data are usually done by what test:

if the comparison data are discrete, what test is done?

Answer 3

1. T-test
2. Chi-square analysis

Question 4

It is considered as independent variable because it is already determined and it is not influenced by other factors.

Answer 4

input or cause

Question 5

All but one refer to dependent variable.

a. temperature
b. time
c. enzyme activities
d. abscissa

Answer 5

c. enzyme activities

Question 6

A variable that can only take a limited number of values

Answer 6

nominal scale

Question 7

Nominal scale is also called:

Answer 7

categories or characters

Question 8

A variable take specific values that have some inherent order

Answer 8

ordinal scale

Question 9

A variable takes on values on a quantitative range with a defined differences between points

Answer 9

interval scale

Question 10

A variable which is a conventional to treat most numeric laboratory measurements as continuous variables even tho they may be reported as discrete values

Answer 10

interval scale

Question 11

the standard deviation of a set of data points divided by the mean result expressed as a percentage or a decimsl fraction

Answer 11

coefficient of variation

Question 12

an interval that is computed to include a parameter

Answer 12

confidence interval