Mathematics Internal Assessment - Exploration
Investigating the trends or patterns in shark attack activity over the past 13 years (from 2001 to 2013) in the United States of America and looking at the possible outcomes of the the activity increasing or decreasing in the next few years.
Author: Cheyenne Hylton
SUBJECT: MATHEMATICS
TEACHER’S NAME: MS. STEELE
CANDIDATE NAME: CHEYENNE HYLTON
CANDIDATE NUMBER: 003311 0013
MATHEMATICS LEVEL: STANDARD LEVEL (SL)
Introduction
On this planet there are a handful of species that are at the top of the food chain, but which species are really at the top? Sharks and human beings both exist at the top of the food chain but both species of mammals find it difficult to coexist, more specifically in a…show more content… So, if it greater than 40 it has to be 41.
The Median
The median is the middle value of an ordered data set. If there are n values, ‘n’ being the number of values in a set of data, listed in order from smallest to largest, the median is the ((n+1)/2)th the data value.
Step 1:
Use the formula to figure out the median of data.
Median formula = ((n+1)/2) n = the number of values
Therefore (13+1)/2 = 7
The 7th values when put in a numerical increasing order is 38, thus the median is 38. Mode
The mode is the number that occurs most frequently in the data.
In figure 1.5, the table has the total attacks rounded off to the nearest tens is done for simplicity and can assist in finding the mode.
The mode is the most frequently occuring value in the data set. The max mode using the total amount of attacks rounded off to the nearest tens is 50 and 40. The min mode using the total amount of attacks rounded off to the nearest tens is 30.
So the mode at: The mode at 50 = occurs 5 times The mode at 40 = occurs 5 times The mode at 30 = occurs 3 times
A Bar Graph Illustrating the Mode of the data (Figure