The amount of money that college students spend on rent each month is usually between $300 and $600. however, there are a few students who spend $1,300. what measure of spread would be most appropriate to measure the amount of money that college students spend on rent per month?
a. median
b. range
c. standard deviation
d. interquartile range

D. interquartile range

Step-by-step explanation:

Range and interquartile range both measures of the spread of data.

When data has no outlier , then the range is the best to measure the spread of data.

When data has outlier , then the interquartile range is the best to measure the spread of data because range gets affected by outliers  .

Given : The amount of money that college students spend on rent each month is usually between $300 and $600. However, there are a few students who spend $1,300.

$1,300 is an extreme value (outlier) as compare to the given range.

Hence, the measure of spread would be most appropriate to measure the amount of money that college students spend on rent per month = " interquartile range"

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm