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The points which represent the relationship between the two sets of information.

Let us take an example of scattered plots:

Given that collected data about exams in each of her classes from the previous year.**Plot the data in a scatter plot.**

Class | Math | English | History | Computer | Biology | Arts |

Period | 2 | 4 | 1 | 5 | 3 | 6 |

Average Score | 95 | 60 | 75 | 85 | 92 | 83 |

**Correlation**

When the 2 sets of given data are strongly linked to each other, we can say they have a **High Correlation.**

Negative Correlation is when one value increases as the other decreases, and vice versa.

Positive Correlation is when both the values increase or decrease together.

**Solved Examples**

**DIRECTIONS for question 1 to 3**: Refer to the following graph and answer the questions given below:**The total values of food grains (rice and wheat) imported during these years are given below:**

**1971 : Rs. 123 crore**

**1980 : Rs. 80 crore**

**1981 : Rs. 314 crore**

**1982 : Rs. 295 crore**

**1983 : Rs. 587 crore**

**1984 : Rs. 158 crore**

**Q 1. Wheat formed what percent of the volume of total imports of food grains from 1980-84?**

**Option:**

2. 66 %

3. 90 %

4. 95 %

**Solution:** Option 3

Adding up the approximate quantity of wheat and dividing it by the total quantity of food grains

(i.e. wheat + rice) will give us

≈ 5516 / 6126 » 90 %.

**Q 2. If the import price of wheat was Rs. 2,400 per tonne in 1983, then what was the import price of rice per tonne during that year?**

**Option:****1. 3,200****2. 2,225****3. 2,850****4. 1,800**

**Solution**: Option 2

In the year 1983, 2,142,000 tonnes of wheat @ Rs 2,400/tonne will mean an expenditure of Rs 514 crore.

So the remaining is 587 – 514 = 73 crore, which was spent on importing 328,000 tonnes of rice. So the price of rice = 730,000 / 328 ≈ Rs 2,225 /tonne

**Q 3. In which year was the ratio of rice to wheat imports the highest?**

**Option: **

2. 1980

3. 1983

4. 1984

**Solution**: Option 4

The ratio is maximum when the numerator is maximum and the denominator is minimum. In the year 1984 the imports of rice are highest and the imports of wheat is the least which gives the maximum ratio.**DIRECTIONS for question 4 to 6: **Refer to the following graph

**Q 4. In which of the following years was the expenditure of the company the maximum?**

**1. 19802. 19793. 19784. 1976**

**Answer**: Option 3 is the correct answer

**Solution**: Expenditure of the company is : Total Sales – Net Profit.

The difference of the total sales & net profit is highest for the year 1978.**Q 5. If a tax of 55 % is to be paid on gross profit before the net profit of that particular year is arrived at, what is the combined gross profit for the years ‘79 and ‘80? (' in Lakhs)**

**1. 322. 173. 464. 67**

**Answer**: Option 4 is the correct answer

**Solution**: The combined Net Profit for both the years 79 and 80 was 29.9 ≈ 30 lakh.

This net profit is calculated after having paid 55 % tax on the gross profit of that particular year.

So the remaining amount will be 45 % of the gross profit and this equals to INR 30 lakh.

So 100 % of that amount, i.e. the combined gross profit must correspond to 30/45 x 100 = 66.66 » 67 lakh. Hence 4 option is the correct answer.

**Q 6. If the expenses on advertising the products in 1980 was 2.5 % of the total sales turnover of the company, what was it as a percentage of the net profit in 1980?**

**1. 11.8%2. 5.7%3. 13.5%4. 10.2%**

**Answer:** Option 4

**Solution**: The advertisement expenditure was 2.5 % of the total sales turnover

= 2.5/100 x 64 = 1.6.

So the percentage of net Profit = 1.6/15.6 x 100

≈ 10(+) %. Hence 4th option is the correct answer.

13 videos|9 docs|22 tests

### Test: Pie Chart- 1

- Test | 5 ques | 10 min
### Test: Pie Chart- 2

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### Test: Pie Chart- 3

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### Test: Pie Chart- 4

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