Module 16 measurement basics

Question 1

Area =

Answer 1

1/2 (sum of the Bases) x height

Question 2

This is the linear distance around an area or structure and is the sum of all the sides.

Answer 2

Perimeter

Question 3

In the case of a circle, the perimeter is referred to as the

Answer 3

circumference, and the formula is C=πd, where

π = 3.141593 and d = diameter of the circle.

Question 4

Area of a rectangle

Answer 4

area = length x width

Question 5

Area of a triangle

Answer 5

Area = 1/2(base x height)
or
Base x Height
---------------------    = Area
          2

Question 6

Area of a trapezoid

Answer 6

Area = 1/2 (Sum of the Bases) x Height

Question 7

__________ are quadrilaterals that have two parallel sides and two non-parallel sides. A trapezoid is a four sided closed shape or figure which cover some area and also has its perimeter. The sides which are parallel to each other are termed the bases. The non-parallel sides are known as legs or lateal sides. The distance between the parallel sides is known as the altitutde.

Answer 7

Trapezoid

Question 8

What are statistics?

Answer 8

A statistic is a single number that represents a group.

Question 9

These are numbers that can be measured and compared with a certain degree of objectivity and precision.

Answer 9

Quantitative data

i.e., building size, acreage, parking spaces, building age

Question 10

In contrast to quantitative data, we have data that is more subjective and often represented by words rater than numbers. _______

Answer 10

qualitative data

Qualitive data can be analyzed through ranking or by assigning numbers to qualitative terms. Terms such as excellent, good, average.

Question 11

The complete set of all the items in a specific category. A population is also referred to as a universe.

Answer 11

Population

Question 12

In statistics, a subset of a population selected for analysis.

Answer 12

Sample

Question 13

In statistics, a characteristic or attribute of an item, service, or individual that can change from observation to observation.

Answer 13

Variable

Question 14

The specific value of a variable is sometimes referred to as a

Answer 14

variate

Question 15

Appraisers commonly use statistics to measure a ___________ in a group of numbers to determine if there is a pattern.

Answer 15

Central tendency

For example, a residential appraisal report form used by lenders asks for the predominant price and age of single-family housing that is located within the market area of the apprised property.

Question 16

Mode=

Answer 16

most frequently occurring

Question 17

Commonly referred to as an average

Answer 17

Mean

Question 18

The _____ is a positional average; it’s the number in the middle

Answer 18

Median

Question 19

To find the median,

Answer 19

it is first necessary to arrange the data in ascending or descending order; this is called an array. Then, count in an equal number from each end.

Question 20

Formula for Median

Answer 20

n + 1
Md = ___________
2

Md=  median
n =  number of variates in the data set.

Question 21

Median number
2,3,4,5
Let’s work the formulat (four numbers + 1)
5 numbers divided by 2 is 2.5. The median is the number that lies between the second and third number. 3.5

Answer 21

Median number

Question 22

What is bimodal distribution?

Answer 22

When there are two modes

Question 23

The mean, median, and mode are measures of

Answer 23

Central tendency and tell us where numbers tend to cluster.

Question 24

We can also examine measure of ______ which quantify the extent to which data vary from the average.

Answer 24

dispersion

Question 25

The simplest measure of dispersion is the

Answer 25

range

Question 26

This is the difference between the highest and lowest value in the data set.

Answer 26

range

Question 27

You are asked to appraise a single-story dome home with a radius of 24 feet. What is the area of the home?

Answer 27

1,809 sq. ft.

Area of a circle is = π r²
π = 3.141593 and r = radius