Mathematics
Draw a histogram showing marks obtained by the students of a school in a Mathematics paper carrying 60 marks.
| Marks | Students |
|---|---|
| 0 - 10 | 4 |
| 10 - 20 | 5 |
| 20 - 30 | 10 |
| 30 - 40 | 8 |
| 40 - 50 | 30 |
| 50 - 60 | 40 |
Related Questions
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, 75, 87, 91.
In a class of 60 students, the marks obtained in a surprise test were as under :
Marks No. of students 14 - 20 4 20 - 26 10 26 - 32 9 32 - 38 15 38 - 44 12 44 - 50 5 50 - 56 3 56 - 62 2 Represent the above data by a histogram and a frequency polygon.
Construct a combined histogram and frequency polygon for the following distribution:
Classes Frequency 91 - 100 16 101 - 110 28 111 - 120 44 121 - 130 20 131 - 140 32 141 - 150 12 151 - 160 4 The mean of 40 items is 35. Later on, it was discovered that two items were misread as 36 and 29 instead of 63 and 22. Find the correct mean.