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从课文开始 Numerical Reasoning Course: Lessons：阅读时间约180分钟。测试中的每道题在课文中都有讲解。
第1题，共18题
The table shows monthly sales by region. Which region had the highest sales in March? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: B. East
Read down the Mar column: East $46,500, North $45,200, South $44,900, West $33,600. East is highest.
第2题，共18题
The table shows monthly sales by region. What were total North sales from January to April? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: D. $175,400
Add the North row: 42,500 + 39,800 + 45,200 + 47,900 = $175,400.
第3题，共18题
The table shows monthly sales by region. In January, what was the difference between the highest and lowest regional sales? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: C. $21,900
Highest in January = East $51,300; lowest = West $29,400. Difference = $21,900.
第4题，共18题
The table shows monthly sales by region. What was the mean (average) monthly sales figure for the West region? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: A. $32,500
Add the four months and divide by 4: $130,000 ÷ 4 = $32,500.
第5题，共18题
The table shows monthly sales by region. Which region's sales went up every month from January to April? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: A. West
West rose each month (29,400 → 31,200 → 33,600 → 35,800). North and East fell in February, and South fell in April.
第6题，共18题
The table shows monthly sales by region. In which month were the combined sales of all four regions highest? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: B. April
Add each month's column: Jan $161,400, Feb $161,300, Mar $170,200, Apr $179,600. April has the highest total.
第7题，共18题
The table shows monthly sales by region. What was the percentage change in East sales from January to April, to one decimal place? 区域 Jan Feb Mar Apr North $42,500 $39,800 $45,200 $47,900 South $38,200 $41,600 $44,900 $43,100 East $51,300 $48,700 $46,500 $52,800 West $29,400 $31,200 $33,600 $35,800
显示答案 答案: B. 2.9%
Change = 52,800 − 51,300 = 1,500. 1,500 ÷ 51,300 × 100 = 2.9%.
第8题，共18题
The table shows answers to a staff survey statement: "I have the tools I need." What percentage agreed or strongly agreed? Answer Number of staff Strongly agree 72 Agree 136 Neutral 56 Disagree 40 Strongly disagree 16
显示答案 答案: D. 65%
Total answers = 320. Agreed or strongly agreed = 72 + 136 = 208. 208 ÷ 320 × 100 = 65%.
第9题，共18题
The table shows answers to a staff survey statement: "I have the tools I need." What percentage of staff gave a Neutral answer? Answer Number of staff Strongly agree 72 Agree 136 Neutral 56 Disagree 40 Strongly disagree 16
显示答案 答案: C. 17.5%
56 ÷ 320 × 100 = 17.5%.
第10题，共18题
The table shows answers to a staff survey statement: "I have the tools I need." What is the ratio of staff who agreed (agree + strongly agree) to staff who disagreed (disagree + strongly disagree), in simplest form? Answer Number of staff Strongly agree 72 Agree 136 Neutral 56 Disagree 40 Strongly disagree 16
显示答案 答案: D. 26:7
Agreed = 208; disagreed = 56. Divide both by 8: 208:56 = 26:7. 17:5 is 136:40 simplified, which leaves out the "strongly" groups.
第11题，共18题
A line chart shows website visits per week. Its data are in the table. In which week was the increase from the week before the largest? Week Visits Week 1 1,240 Week 2 1,310 Week 3 1,580 Week 4 1,520 Week 5 1,890 Week 6 1,960
显示答案 答案: A. Week 5
Changes from the week before: Week 2 +70, Week 3 +270, Week 4 −60, Week 5 +370, Week 6 +70. Week 5 rose most (+370). Week 6 has the most visits but only rose by 70.
第12题，共18题
A pie chart shows how a $240,000 yearly budget is split. Its data are in the table. How much is spent on training? Budget item Share of budget Salaries 62% Rent 15% Equipment 9% Training 6% Other 8%
显示答案 答案: A. $14,400
6% of $240,000 = 0.06 × 240,000 = $14,400.
第13题，共18题
A pie chart shows how a $240,000 yearly budget is split. Its data are in the table. How much more is spent on salaries than on rent? Budget item Share of budget Salaries 62% Rent 15% Equipment 9% Training 6% Other 8%
显示答案 答案: B. $112,800
Salaries − rent = 62% − 15% = 47% of the budget. 0.47 × 240,000 = $112,800.
第14题，共18题
Which type of chart is best for showing how monthly sales changed over a year? 显示答案 答案: A. Line chart
Line charts are used for time series, such as sales month by month.
第15题，共18题
Which type of chart is best for showing how one total budget is divided into parts? 显示答案 答案: B. Pie chart
A pie chart shows the parts (components) that make up a whole.
第16题，共18题
Seven staff worked these overtime hours last month: 4, 7, 12, 3, 9, 30, 6. What is the median? 显示答案 答案: D. 7 hours
Put the values in order: 3, 4, 6, 7, 9, 12, 30. The middle (4th) value is 7. The mean would be 10.1.
第17题，共18题
Seven staff worked these overtime hours last month: 4, 7, 12, 3, 9, 30, 6. Why might a manager report the median instead of the mean? 显示答案 答案: C. One very high value (30) pulls the mean up
The median is less affected by extreme values. Here the single 30-hour value raises the mean to 10.1, while the median stays at 7.
第18题，共18题
The table shows how many shifts staff worked last week. What was the mean number of shifts per staff member? Shifts worked Number of staff 3 4 4 10 5 6
显示答案 答案: C. 4.1
Weight each value by how many staff: 3×4 + 4×10 + 5×6 = 82 shifts. Staff = 20. Mean = 82 ÷ 20 = 4.1.
键盘：按1–4作答，按 Enter 进入下一题。