Question

Answer question 1 & 2 asap please

Below are the times (in days) it takes for a sample of 17 customers from Sarah's computer store to pay their invoices. 19, 15,43, 39, 35, 31, 27, 22, 18, 30, 30, 30, 26, 26, 21, 21, 17 Draw the histogram for these data using an initial class boundary of 14.5 and a class width of 7. Note that you can add or remove classes from the figure. Label each class with its endpoints. Frequency 0:00 00:0 5 ? 7+ 6+ 5+ 4- 3+ 2+ 0 0 0 0 0 0 1 . Time (in days)

Answer 1

Q1

Given data of 17 customer Sarah computer store is as follow

19 15 43 39 35 31 27 22 18 30 30 30 26 26 21 21 27

Sorted data is as follow : - 15 18 19 21 21 22 26 26 27 27 30 30 30 31 35 39 43

To draw histogram of these data

We need take initial class boundry of 14.5 , and class width of 7

Class interval (or boundry) will be as follow :- 14.5 - 21.5 , 21.5 - 28.5 and so on

Table

Class inteval	Frequency
14.5 - 21.5	5
21.5 - 28.5	5
28.5 - 35.5	5
35.5 - 42.5	1
42.5 - above	1

{ Note that we will plot histogram using R-software , similar plot can be drawn mannualy as required above }

Histogram 5 4 3 T F19.uertes Frequency 2 - o 10 20 30 40 50 Time(in days)

Q2

Data of grade of 18 students on an economic test is as follow

66,62,81,76,82,84,64,95,90,73,66,84,85,91,86,63,80,92

To construct box-and-whisker plot of the data

Now 5-number summary of above data in as follow

# Using R

> summary(x)
   Min.   1st Qu. Median    Mean   3rd Qu.    Max.
62.00 67.75    81.50    78.89    85.75     95.00

{ Note that - Here cannot determine which tools are provided , so we will constuct box-and-whisker plot using R , similar boxplot can be drawn manually or in format given above . }

Box-and-Whisker Plot 65 70 75 80 85 90 95 Score on economic test