What are the advantages and disadvantages ofStem and Leaf Plot

MEDIUM

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Kajal is four years old. She likes to sit at the window of her house and look at the cars, scooters, and motorcycles that go past the house.

We collected information about the different cars that Kajal saw today.

Question Image

Find the total number of blue cars.

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.
The following tables give the data on human impact by region caused by disasters.

Disasters with a Natural trigger (Number of People)

	Killed	Injured	affected	homeless
Africa	76485	1017	11450827	256871
America	8988	15180	4487691	308359
Asia	55922	37288	111473882	4334807
Europe	2240	3475	561580	64965
Oceania	94	135	653827	14077
Total	143729	57095	128627807	4979079

Disaster with a Non- Natural Trigger (Number of people)

	Killed	Injured	affected	homeless
Africa	590	256	3526	2384
America	3775	1044	49363	1734
Asia	2326	5712	41575	6359
Europe	906	535	9099	7784
Oceania	20	486	11410	64
Total	7617	8033	114973	18325

What percentage of the impact of non natural disasters has resulted into homeless ?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer to the table and answer the following questions related to the table
There are

6

bakeries in the area that make sponge cakes and below are the compositions of each of their recipes.

Item	Bakery						UNIT
	A	B	C	D	E	F
FLOUR	1000	900	900	900	1000	1000	Gm
SUGAR	6	6	7	6	5	6	Tablespoon
WATER	500	450	420	480	500	500	ml
EGGS	3	3	3	3	2	2	number
BUTTER	250	300	250	300	300	250	Gm

1

tablespoon

= 25 gm

1 ml

of water

= 1 gm

,

1

egg

= 80 gm

From among the

6

recipes, which is by weight the lowest percentage of water?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.

Year	World Export	Export of Developed World	Export of Developing World	Exports of Petroleum Exporting Nations
$1989$	$3000$	$2150$	$650$	$160$
$1990$	$3450$	$2400$	$740$	$200$
$1991$	$3520$	$2500$	$790$	$198$
$1992$	$3614$	$2650$	$850$	$210$

The percentage rise in world exports between $1992$ and $1989$ is equal to_____.

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer to the table below and answer the following questions related to the table:

Year	World export	Export of Developed World	Export of Developing world	Exports of Petroleum exporting nations
1989	3000	2150	650	160
1990	3450	2400	740	200
1991	3520	2500	790	198
1992	3614	2650	850	210

Which group of nations has shown the maximum exports during

1989

to

1992 ?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer to the table and answer the following questions related to the table
There are

6

bakeries in the area that make sponge cakes and below are the compositions of each of their recipes.

Item	Bakery						UNIT
	A	B	C	D	E	F
FLOUR	1000	900	900	900	1000	1000	Gm
SUGAR	6	6	7	6	5	6	Tablespoon
WATER	500	450	420	480	500	500	ml
EGGS	3	3	3	3	2	2	number
BUTTER	250	300	250	300	300	250	Gm

1

tablespoon

= 25 gm

,

1 ml

of water

= 1 gm,

1

egg

= 80 g

If one assumes that a cake loses

50 %

of its water and

20 %

of its butter during the banking process, then which cake will be the lightest after banking?

MEDIUM

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Kajal is four years old. She likes to sit at the window of her house and look at the cars, scooters, and motorcycles that go past the house.

We collected information about the different cars that Kajal saw today.

Question Image

Find the total number of cars.

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Directions : In the following table the number of students passed in different subjects is given.
Question Image

In which year minimum percentage of students pass ?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.

	sales	Expenditure	Equity
1988	250	230	10
1989	270	260	10
1990	310	290	15
1991	370	360	20
1992	440	410	30

Profit= sales - Expenditure

In which year was the ratio of expenditure to sales the lowest?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table
A survey of movie goers from cities A, B, C, D and E is summarized below. The first column gives the percentage of viewers in each city who watch less than one movie a week . The second column gives the total number of viewers who view one or more movies per week

City	I	II
A	60	2400
B	20	3000
C	85	2400
D	55	2700
E	75	8000

A city with the Lowest number of movies watchers is_____.

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.

	sales	Expenditure	Equity
1988	250	230	10
1989	270	260	10
1990	310	290	15
1991	370	360	20
1992	440	410	30

Profit= sales - Expenditure

In the following years when was the ratio of profit to equity the highest ?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.

	sales	Expenditure	Equity
1988	250	230	10
1989	270	260	10
1990	310	290	15
1991	370	360	20
1992	440	410	30

Profit= sales - Expenditure
In the following years when was the ratio of profit to equity the lowest?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer to the table below and answer the following questions related to the table.

	sales	Expenditure	Equity
$1988$	$250$	$230$	$10$
$1989$	$270$	$260$	$10$
$1990$	$310$	$290$	$15$
$1991$	$370$	$360$	$20$
$1992$	$440$	$410$	$30$

$Profit = Sales - Expenditure$
In which year was the ratio of profit to sales the highest?

MEDIUM

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Study the following table carefully to answer the questions that follow.

Monthly rent (in ₹. thousand) at five different places in six different years is given below:

Year	Place
Year	Churchgate	Dadar	Kandivali	Borivali	Virar
$2005$	$5.3$	$3.8$	$1.5$	$2.7$	$1.1$
$2006$	$12.5$	$8.3$	$3.4$	$4.8$	$2.1$
$2007$	$16.7$	$11.7$	$5.5$	$6.6$	$1.8$
$2008$	$20.9$	$13.6$	$9.8$	$12.7$	$3.6$
$2009$	$25.8$	$14.5$	$11.5$	$14.1$	$5.5$
$2010$	$30.3$	$20.9$	$15.6$	$15.9$	$7.8$

What was the difference between the monthly rent at Dadar in the year

2009

and Borivali in the year

2007

?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.
The institute placement cell conducted a survey to determine preferences of students in the various areas of specialization. The two areas tested were Finance and Marketing. The following table indicates the number of students who preferred one or both specializations.

Prior work experience (years)	Specialization preferred						Total no. of students surveyed including those who did not prefer either specialization
	Marketing		Finance		Both
	Male	Female	Male	Female	Male	Female	Male	Female
0 to 1	180	60	240	180	90	45	420	270
2 to3	150	120	120	150	90	60	600	480
4 or more	120	90	90	60	30	45	300	360

How many students with

0 - 1

years of work experience prefer only one specialization ?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.
The following tables give the data on human impact by region caused by disasters.
Disasters with a Natural trigger (Number of People)

	Killed	Injured	affected	homeless
Africa	76485	1017	11450827	256871
America	8988	15180	4487691	308359
Asia	55922	37288	111473882	4334807
Europe	2240	3475	561580	64965
Oceania	94	135	653827	14077
Total	143729	57095	128627807	4979079

Disaster with a Non- Natural Trigger (Number of people)

	Killed	Injured	affected	homeless
Africa	590	256	3526	2384
America	3775	1044	49363	1734
Asia	2326	5712	41575	6359
Europe	906	535	9099	7784
Oceania	20	486	11410	64
Total	7617	8033	114973	18325

As the percentage of the total impact in any region for natural disasters, the maximum injuries have occurred in which region?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

The stem and leaf plot retains the _____ data without loss of information.

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table below and answer the following questions related to the table.
The following tables give the data on human impact by region caused by disasters.
Disasters with a Natural trigger (Number of People)

	Killed	Injured	affected	homeless
Africa	76485	1017	11450827	256871
America	8988	15180	4487691	308359
Asia	55922	37288	111473882	4334807
Europe	2240	3475	561580	64965
Oceania	94	135	653827	14077
Total	143729	57095	128627807	4979079

Disaster with a Non- Natural Trigger (Number of people)

	Killed	Injured	affected	homeless
Africa	590	256	3526	2384
America	3775	1044	49363	1734
Asia	2326	5712	41575	6359
Europe	906	535	9099	7784
Oceania	20	486	11410	64
Total	7617	8033	114973	18325

The total number of people left injured by the disasters (natural and non natural) is equal to_____

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer the table and answer the following questions related to the table
There are

6

bakeries in the area that make sponge cakes and below are the compositions of each of their recipes.

Item	Bakery						UNIT
	A	B	C	D	E	F
FLOUR	1000	900	900	900	1000	1000	Gm
SUGAR	6	6	7	6	5	6	Tablespoon
WATER	500	450	420	480	500	500	ml
EGGS	3	3	3	3	2	2	number
BUTTER	250	300	250	300	300	250	Gm

1

table spoon

= 25 gm

,

1 ml

of water

= 1 gm

,

1

egg

= 80 gm

Whose recipe contains by weight, the highest percentage of flour?

EASY

Mathematics (9709)>P-5: Statistics and Probability 1>Representation of Data>Representation of Discrete Data

Refer to the table below and answer the following questions related to the table:

Year	World export	Export of Developed World	Export of Developing world	Exports of Petroleum exporting nations
1989	3000	2150	650	160
1990	3450	2400	740	200
1991	3520	2500	790	198
1992	3614	2650	850	210

If the petroleum exporting nations were the only nations exporting petroleum in all the years, then the petroleum exports in all the years as a percentage of total exports for the year

1991

is equal to_____.

What are the advantages and disadvantages of Stem and Leaf Plot?

Important Questions on Representation of Data

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