Homework SourseChapter 2 question 22 Chapter 2 question 32 Chapter 2 questi
Solution
37.
a) We have to make a frequency table showing frequency of hurricanes in each categories during the decades.
So first we classify the categories in a column than the number of hurricanes during decdes of each type in the next column.
Thus in the first column categories are defined and second column no. of hurricanes in respective categories during decade.
b) Table for frequency of hurricane in each year
c) we will chose the categories and their frequency according to label.
22 a) Boxplot contain 5 measures
minimum, Q1,Q2,Q3,maximum.
Median= Q2
Commands in excel: for minimum:= MIN(array), Max: = Max (array), Qurt: = Quartile(array, quart)
Sample I is wild type
Measures for sample I is below : (calculated in excel)
168
Where minimum=0
Q1=25
Q2=80=median
Q3=103.5
Maximum=168
For sample II
Where minimum= 96, Q1= 106.75,Q2=142, Q3= 168, Maximum=195
From boxplots we can see that spd mutant has higher agression score.
b) range for wild type= Maximum- minimu= 168-0=168
range for spd mutant= 195-96=99
therefore wild type has a higher range.
c) inter quatile range= Q3-Q1
Wild type: IQr= 103.5-25= 78.5
Spd mutant: IQr= 168-106.75=61.25
Hence sample I has larger IQR.
d) Outliers in boxplot are:
Q1-1.5* IQR and Q3+1.5* IQR
for wild type ( 25-1.5*78.5, 103.5+1.5*78.5)= 102, 221.25
Similarly for spd mutant ( 14.875, 259.875)
| CategoriesNo. Of hurricanes | |
| Erin | 1 |
| Feliz | 1 |
| Gabrielle | 1 |
| Humberto | 2 |
| Iris | 1 |
| Karen | 2 |
| Michelle | 1 |
| Noel | 2 |
| Olga | 1 |
| Gustav | 2 |
| Isidore | 1 |
| kyle | 2 |
| Lili | 1 |
| Claudette | 1 |
| Danny | 1 |
| Erika | 1 |
| Fabian | 1 |
| Isabale | 1 |
| Jaun | 1 |
| Kate | 1 |
| Alex | 2 |
| Charley | 1 |
| Danielle | 2 |
| Frances | 1 |
| Gaston | 1 |
| Ivan | 1 |
| Jeanne | 1 |
| Karl | 2 |
| Lisa | 2 |
| Cindy | 1 |
| Dennis | 1 |
| Emily | 1 |
| Irene | 1 |
| Katrina | 1 |
| Maria | 1 |
| Nate | 1 |
| Ophelia | 1 |
| Phillippe | 1 |
| Rita | 1 |
| Stan | 1 |
| Vince | 1 |
| Wilma | 1 |
| Beta | 1 |
| Epsilon | 1 |
| Ernesto | 1 |
| Florence | 1 |
| Gordon | 1 |
| Helene | 1 |
| Isaac | 1 |
| Dean | 1 |
| Felix | 1 |
| Lorenzo | 1 |
| Bertha | 1 |
| Dolly | 1 |
| Hanna | 1 |
| Ike | 1 |
| Omar | 1 |
| Paloma | 1 |
| Bill | 1 |
| Fred | 1 |
| Ida | 1 |
| Earl | 1 |
| Igore | 1 |
| Julia | 1 |
| Otto | 1 |
| Paula | 1 |
| Richard | 1 |
| Shary | 1 |
| Toas | 1 |
