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5. Find the mean salary of 60 workers of a factory from the following table:
17
Oct
5. Find the mean salary of 60 workers of a factory from the following table: 5. Find the mean salary of 60 workers of a factory from the following table: October 17, 2020 Category: Chapter 14 - Statistics , Maths , NCERT Class 9 ,
4. Find the mode of 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18.
17
Oct
4. Find the mode of 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18. -22 14 17 18 23 25 28 4. Find the mode of 14 October 17, 2020 Category: Chapter 14 - Statistics , Maths , NCERT Class 9 ,
3. The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x. 29, 32, 48, 50, x, x+2, 72, 78, 84, 95
17
Oct
3. The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x. 29, 32, 48, 50, x, x+2, 72, 78, 84, 95 3^2 3. The following observations have been arranged in ascending order. If the median of the data is 63 48 50 7^2 [...]
2. In a mathematics test given to 15 students, the following marks (out of 100) are recorded: 41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60 Find the mean, median and mode of this data.
17
Oct
2. In a mathematics test given to 15 students, the following marks (out of 100) are recorded: 41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60 Find the mean, median and mode of this data. 2. In a mathematics test given to 15 students 39 40 42 46 48 [...]
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2. In a mathematics test given to 15 students ,
39 ,
40 ,
42 ,
46 ,
48 ,
5^2 ,
54 ,
60 Find the mean ,
62 ,
96 ,
98 ,
median and mode of this data. ,
the following marks (out of 100) are recorded: 41 ,
1. The following number of goals were scored by a team in a series of 10 matches: 2, 3, 4, 5, 0, 1, 3, 3, 4, 3 Find the mean, median and mode of these scores.
17
Oct
1. The following number of goals were scored by a team in a series of 10 matches: 2, 3, 4, 5, 0, 1, 3, 3, 4, 3 Find the mean, median and mode of these scores. 1 1. The following number of goals were scored by a team in a series of 10 matches: 2 [...]
9. 100 surnames were randomly picked up from a local telephone directory and a frequency distribution of the number of letters in the English alphabet in the surnames was found as follows: (i) Draw a histogram to depict the given information. (ii) Write the class interval in which the maximum number of surnames lie.
17
Oct
9. 100 surnames were randomly picked up from a local telephone directory and a frequency distribution of the number of letters in the English alphabet in the surnames was found as follows: (i) Draw a histogram to depict the given information. (ii) Write the class interval in which the maximum number of surnames lie. 2. [...]
8. A random survey of the number of children of various age groups playing in a park was found as follows: Draw a histogram to represent the data above.
17
Oct
8. A random survey of the number of children of various age groups playing in a park was found as follows: Draw a histogram to represent the data above. 8. A random survey of the number of children of various age groups playing in a park was found as follows: Draw a histogram to represent [...]
7. The runs scored by two teams A and B on the first 60 balls in a cricket match are given below Represent the data of both the teams on the same graph by frequency polygons. [Hint: First make the class intervals continuous.]
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Oct
7. The runs scored by two teams A and B on the first 60 balls in a cricket match are given below Represent the data of both the teams on the same graph by frequency polygons. [Hint: First make the class intervals continuous.] 2. Classify the data in Q.1 above as primary or secondary data. [...]
6. The following table gives the distribution of students of two sections according to the marks obtained by them: Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the two sections.
17
Oct
6. The following table gives the distribution of students of two sections according to the marks obtained by them: Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the two sections. 2. Classify the data in Q.1 above [...]
5. The following table gives the life times of 400 neon lamps: Life Time (in hours) Number of lamps 300 – 400 14 400 – 500 56 500 – 600 60 600 – 700 86 700 – 800 74 800 – 900 62 900 – 1000 48 (i) Represent the given information with the help of a histogram. (ii) How many lamps have a life time of more than 700 hours?
17
Oct
5. The following table gives the life times of 400 neon lamps: Life Time (in hours) Number of lamps 300 – 400 14 400 – 500 56 500 – 600 60 600 – 700 86 700 – 800 74 800 – 900 62 900 – 1000 48 (i) Represent the given information with the help [...]