# Describe the summary of the perfomance of eight graders nationwide.

FizeauV 2021-03-12 Answered
Describe the summary of the perfomance of eight graders nationwide.
You can still ask an expert for help

Expert Community at Your Service

• Live experts 24/7
• Questions are typically answered in as fast as 30 minutes
• Personalized clear answers

Solve your problem for the price of one coffee

• Available 24/7
• Math expert for every subject
• Pay only if we can solve it

## Expert Answer

Cullen
Answered 2021-03-13 Author has 89 answers
Modality:
On describing the peak ness in shape of distribution, then it is termed as modality of the distribution.
And thus Based on the number of peaks, the modality is classified into three types namely unimodal, bimodal and multimodal.
Unimodal: The number of peak is one.
Bimodal: The number of peak is two.
Multimodal: The number of peak is three or more than three.
From the histogram obtained part (b) it is observed that, it has only one peak and hence it is considered as roughly unimodal in nature with left skewed distribution.
The distribution has center value at 283, among 50 percent of the data lies between the range 278 to 288 and the overall range of the histogram lies from 265 to 299. There are several low performance scores namely California, west Virginia, New Mexico, Alabama and Mississippi also because of these low scores the mean is lowerthan.the median.
###### Not exactly what you’re looking for?

Expert Community at Your Service

• Live experts 24/7
• Questions are typically answered in as fast as 30 minutes
• Personalized clear answers

Solve your problem for the price of one coffee

• Available 24/7
• Math expert for every subject
• Pay only if we can solve it