In a village three different crops are cultivated in four successive years. The profit (in ₹) on the crops per, acre is shown in the table below- Crop/ Year 2005 2006 2007 2008 Ground nuts 7000 8000 7500 7500 Jawar 6000 1000 8000 1000 Millets 9000 5000 3000 4000 Calculate the mean profit for each crop over the four years.

Given data: Crop/ Year 2005 2006 2007 2008 Ground nuts 7000 8000 7500 7500 Jawar 6000 1000 8000 1000 Millets 9000 5000 3000 4000 We know that, Average ( mean ) = Sum of observations Number of observations Mean profit for : 1) Ground nuts : Mean = 7000 + 8000 + 7500 + 7500 4 = 30000 4 = 7500 Hence, mean profit for ground nuts over four years is ₹ 7500 . 2) Jawar : Mean = 6000 + 1000 + 8000 + 1000 4 = 16000 4 = 4000 Hence, mean profit for jawar over four years is ₹ 4000 . 3) Millets : Mean = 9000 + 5000 + 3000 + 4000 4 = 21000 4 = 5250 Hence, mean profit for millets over four years is ₹ 5250 .

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English. Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 Find the average marks secured by Anju. Will you divide the total marks by 3 ? or 4 ? Why?

Given data : The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English. Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 As Anju was absent in unit test 1 , total number of tests given by Anju is 3 . We know that, Average ( mean ) = Sum of observations Number of observations = 19 + 23 + 21 3 = 63 3 = 21 Hence, average marks secured by Anju is 21 .

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English. Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 Nilesh has given all four tests. Find the average marks secured by him. Will you divide the total marks by 3 or 4 ? Why?

Given data: Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 As Nilesh has given all four tests, we will divide the total marks secured by him with 4 to get average marks. We know that, Average ( mean ) = Sum of observations Number of observations Here, average score = Total marks obtained in all tests Number of tests attempted = 0 + 20 + 22 + 24 4 = 66 4 = 16 . 5 Hence, average marks secured by Nilesh is 16 . 5 . We divide the total mark obtained by Nilesh by 4 not by 3 . Because, total number of tests he attempted is 4 .

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English. Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 Who performed best in the English?

Given data: Name of the student Unit Test 1 Unit Test 2 Unit Test 3 Unit Test 4 Anju Absent 19 23 21 Nilesh 0 20 22 24 Lekhya 20 24 24 24 We know that, Average ( mean ) = Sum of observations Number of observations Average marks of, 1) Anju: Average ( mean ) = 19 + 23 + 21 3 = 63 3 = 21 2) Nilesh: Average ( mean ) = 0 + 20 + 22 + 24 4 = 66 4 = 16 . 5 3) Lekhya: Average ( mean ) = 20 + 24 + 24 + 24 4 = 92 4 = 23 On observing average marks of three of them, we can say that Lekhya performed best in the English.

Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise

Author:Andhra Pradesh Board

Andhra Pradesh Board Mathematics Solutions for Exercise - Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise

Attempt the free practice questions on Chapter 7: Data Handling, Exercise 8: Exercise with hints and solutions to strengthen your understanding. Mathematics 7 solutions are prepared by Experienced Embibe Experts.

Questions from Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise with Hints & Solutions

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 2

Rice consumed in a school under the mid-day meal program for $5$ consecutive days is $15.750 kg, 14.850 kg, 16.500 kg, 14.700 kg and 17.700 kg$ . If the average rice consumption for the $5$ days is $(k . 9) kg$ then find $k$ .

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 3

In a village three different crops are cultivated in four successive years. The profit (in ₹) on the crops per, acre is shown in the table below-

Crop/ Year	$2005$	$2006$	$2007$	$2008$
Ground nuts	$7000$	$8000$	$7500$	$7500$
Jawar	$6000$	$1000$	$8000$	$1000$
Millets	$9000$	$5000$	$3000$	$4000$

Calculate the mean profit for each crop over the four years.

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 3

In a village three different crops are cultivated in four successive years. The profit (in ₹) on the crops per, acre is shown in the table below-

Crop/ Year	$2005$	$2006$	$2007$	$2008$
Ground nuts	$7000$	$8000$	$7500$	$7500$
Jawar	$6000$	$1000$	$8000$	$1000$
Millets	$9000$	$5000$	$3000$	$4000$

Based on mean profit of each crop over four years which crop should be cultivated next year.

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 4

The number of passengers who travelled in $APSRTC$ bus from Adilabad to Nirmal in $4$ trips in a day are $39, 30, 45 and 54$ . What is the occupancy ratio (average number of passengers travelling per trip) of the bus for the day.

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English.

Name of the student	Unit Test $1$	Unit Test $2$	Unit Test $3$	Unit Test $4$
Anju	Absent	$19$	$23$	$21$
Nilesh	$0$	$20$	$22$	$24$
Lekhya	$20$	$24$	$24$	$24$

Find the average marks obtained by Lekhya.

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English.

Name of the student	Unit Test $1$	Unit Test $2$	Unit Test $3$	Unit Test $4$
Anju	Absent	$19$	$23$	$21$
Nilesh	$0$	$20$	$22$	$24$
Lekhya	$20$	$24$	$24$	$24$

Find the average marks secured by Anju. Will you divide the total marks by $3$ ? or $4$ ? Why?

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English.

Name of the student	Unit Test $1$	Unit Test $2$	Unit Test $3$	Unit Test $4$
Anju	Absent	$19$	$23$	$21$
Nilesh	$0$	$20$	$22$	$24$
Lekhya	$20$	$24$	$24$	$24$

Nilesh has given all four tests. Find the average marks secured by him. Will you divide the total marks by $3 or 4$ ? Why?

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The following table shows the marks scored by Anju, Neelesh and Lekhya in four unit tests of English.

Name of the student	Unit Test $1$	Unit Test $2$	Unit Test $3$	Unit Test $4$
Anju	Absent	$19$	$23$	$21$
Nilesh	$0$	$20$	$22$	$24$
Lekhya	$20$	$24$	$24$	$24$

Who performed best in the English?

Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise

Andhra Pradesh Board Mathematics Solutions for Exercise - Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise

Questions from Andhra Pradesh Board Solutions for Chapter: Data Handling, Exercise 8: Exercise with Hints & Solutions

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