Chapter 14 – Statistics
13. Ten observations 6, 14, 15, 17, x + 1, 2x – 13, 30, 32, 34, 43 are written in an ascending order. The median of the data is 24. Find the value of x.
03
Jul
13. Ten observations 6, 14, 15, 17, x + 1, 2x – 13, 30, 32, 34, 43 are written in an ascending order. The median of the data is 24. Find the value of x. 13. Ten observations 6 14 15 17 2x – 13 3^2 30 34 43 are written in an ascending order. [...]
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13. Ten observations 6 ,
14 ,
15 ,
17 ,
2x – 13 ,
3^2 ,
30 ,
34 ,
43 are written in an ascending order. The median of the data is 24. Find the value of x. ,
x + 1 ,
12. Mean of 50 observations was found to be 80.4. But later on, it was discovered that 96 was misread as 69 at one place. Find the correct mean.
03
Jul
12. Mean of 50 observations was found to be 80.4. But later on, it was discovered that 96 was misread as 69 at one place. Find the correct mean. 12. Mean of 50 observations was found to be 80.4. But later on it was discovered that 96 was misread as 69 at one place. Find [...]
11. A class consists of 50 students out of which 30 are girls. The mean of marks scored by girls in a test is 73 (out of 100) and that of boys is 71. Determine the mean score of the whole class.
03
Jul
11. A class consists of 50 students out of which 30 are girls. The mean of marks scored by girls in a test is 73 (out of 100) and that of boys is 71. Determine the mean score of the whole class. 11. A class consists of 50 students out of which 30 are girls. [...]
10. Obtain the mean of the following distribution:
03
Jul
10. Obtain the mean of the following distribution: 10. Obtain the mean of the following distribution: July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 ,
9. If the mean of the following data is 20.2, find the value of p:
03
Jul
9. If the mean of the following data is 20.2, find the value of p: 9. If the mean of the following data is 20.2 find the value of p. July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 ,
8. The following table gives the frequencies of most commonly used letters a, e, i, o, r, t, u from a page of a book : Represent the information above by a bar graph.
03
Jul
8. The following table gives the frequencies of most commonly used letters a, e, i, o, r, t, u from a page of a book : Represent the information above by a bar graph. -e 8. The following table gives the frequencies of most commonly used letters a I O R t) u from a [...]
7. Expenditure on Education of a country during a five year period (2002-2006), in crores of rupees, is given below: Represent the information above by a bar graph.
03
Jul
7. Expenditure on Education of a country during a five year period (2002-2006), in crores of rupees, is given below: Represent the information above by a bar graph. 7. Expenditure on Education of a country during a five year period (2002-2006) in crores of rupees is given below: Represent the information above by a bar [...]
6. The expenditure of a family on different heads in a month is given below: Draw a bar graph to represent the data above
03
Jul
6. The expenditure of a family on different heads in a month is given below: Draw a bar graph to represent the data above 6. The expenditure of a family on different heads in a month is given below: Draw a bar graph to represent the data above July 3, 2021 Category: Chapter 14 - [...]
5. Convert the given frequency distribution into a continuous grouped frequency distribution: In which intervals would 153.5 and 157.5 be included?
03
Jul
5. Convert the given frequency distribution into a continuous grouped frequency distribution: In which intervals would 153.5 and 157.5 be included? 5. Convert the given frequency distribution into a continuous grouped frequency distribution: In which intervals would 153.5 and 157.5 be included? July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability [...]
4. Prepare a continuous grouped frequency distribution from the following data: Also find the size of class intervals.
03
Jul
4. Prepare a continuous grouped frequency distribution from the following data: Also find the size of class intervals. 4. Prepare a continuous grouped frequency distribution from the following data: Also find the size of class intervals. July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 [...]