Description
these are the questions I am needing help on
 The following information regarding a sample of seven students is provided. (20 points in total)
Student 
Identification number 
Grade Point Average 
Classification 
Gender 
Rank in Class 
Adam 
1234 
2.89 
Senior 
Male 
15 
Brandon 
8978 
2.01 
Junior 
Male 
25 
Jason 
6578 
3.97 
Freshman 
Male 
3 
Marissa 
2345 
3.98 
Sophomore 
Female 
2 
Michelle 
8901 
2.67 
Senior 
Female 
18 
Wendy 
7789 
4.00 
Senior 
Female 
1 
Webster 
6780 
3.77 
Freshman 
Male 
4 
2.1 How many elements are there in the above dataset? And how many observations are there in this dataset? (5 points)
2.2 Which variables are categorical, and which are quantitative variables? (Exclude the first column Student as a variable.) (5 points)
2.3 What scale of measurement is used for each variable? (Exclude the first column Student as a variable.) (10 points)
 The sales record of a real estate company for the month of May shows the following ten house prices (rounded to the nearest $1,000). Values are in thousands of dollars. (30 points in total)
105 
55 
45 
85 
75 
30 
60 
75 
79 
95 
3.1 A frequency distribution for the dataset above is already given as the 1st and 2nd columns in the following table. Based on the frequency distribution, complete the missing/empty cells (highlighted in green) for the corresponding relative and percent frequency distributions for the house prices in the table. (12 points)
Sales Price 
Frequency 
Relative Frequency 
Percent Frequency 
20 – 39 
1 
% 

40 – 59 
2 
% 

60 – 79 
4 
% 

80 – 99 
2 
% 

100 – 119 
1 
% 

Total 
10 
% 
3.2 Complete the missing/empty cells (highlighted in green) for the corresponding cumulative and cumulative percent frequency distributions in the following table. (10 points)
Sales Price 
Cumulative Frequency 
Cumulative Percent Frequency 
? 39 
% 

? 59 
% 

? 79 
% 

? 99 
% 

? 119 
% 
3.3 According to the nonoverlapping classes/bins in the table in Part 3.1, how many such classes are used in the table? And what is the class width for each class? (4 points)
3.4 According to the table in Part 3.2, what percentage of the houses sold at a price below $80,000? (2 points)
3.5 The histogram of the house price dataset is given on the right. According to the histogram, comment on the skewness of the distribution. Is the distribution skewed to the right, skewed to the left, or symmetric? (2 points)
 The following data represent the daily supply (y in thousands of units) and the unit price (x in dollars) for a product. (10 points in total)
Unit Price (x) 
Daily Supply (y) 
2 
5 
4 
7 
8 
9 
5 
12 
7 
10 
8 
13 
16 
16 
6 
16 
4.1 For the x variable Unit Price, its box plot can be shown as on the right. According to the box plot, what is the median value? What are the first quartile (Q_{1}) and the third quartile (Q_{3}) values? Is there any outlier? If so, what is/are the value(s) of the outlier(s)? (7 points)
4.2 The scatter plot for the two variables y and x is given on the right. According to the scatter plot, comment on the relationship between y and x. (3 points)