Question
Assist with these 6 stats questions for HW Use this data to answer Questions 1-3: A team of business analysts observe operations at a retail
Assist with these 6 stats questions for HW
Use this data to answer Questions 1-3:
A team of business analysts observe operations at a retail center.They count the number of customers visiting this center within 30 minute periods. The following table the sample counts:
46 | 100 | 144 | 36 | 95 | 53 | 71 | 46 | 84 | 50 |
72 | 140 | 138 | 56 | 24 | 127 | 96 | 22 | 145 | 49 |
123 | 137 | 57 | 142 | 149 | 23 | 106 | 40 | 48 | 129 |
133 | 139 | 89 | 81 | 136 | 24 | 28 | 60 | 43 | 89 |
1. You are asked to summarize and create a frequency distribution for this data. Using the 2k>n rule, what is the minimum number of classes you can create for this data?
2. What is the estimated class width?
3. Organize the data as required and prepare descriptive statistics using excel descriptive statistic to answer the following:
- The data is normally distributed with a Skewness value of 1.0
- The data is negatively skewed with a Skewness value of -1.481
- The data is positively skewed with a Skewness value of 42.99
- The data is positively skewed with a Skewness value of 0.118
Use the following information to answer questions 4-6:
Internal Revenue Services (IRS) selects taxpayer files for audit if their profile matches certain criteria. The Following sample is taken from taxpayers who were audited for tax year 2019:
Frequency | Taxable Income($1000s) |
2 | 20 to under 40 |
5 | 40 to under 60 |
22 | 60 to under 80 |
25 | 80 to under 100 |
15 | 100 to under 120 |
10 | 120 to under 140 |
6 | 140 to under 160 |
5 | 160 to under 180 |
- What is the cumulative relative frequency of taxpayers who were audited and their taxable income was less than $120,000?
- What was the approximate average taxable income of taxpayers in this sample?
- What is the approximate standard deviation of taxable income in this sample, rounded to the nearest dollar?
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