Draw a histogram for the daily earnings of `30` drug stores in the following table:
Daily earning (in Rs.): `450-500, 500-550, 550-600, 600-650, 650-700`
No. of Stores:`16, 10, 7, 3, 1`

Find the mean deviation from the mean for the following data: Classes 0-100 100-200 200-300 300-400 400-500 500-600 600-700 700-800 Frequencies 4 8 9 10 7 5 4 3

The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure: (in Rs.) 100-150 150-200 200-250 250-300 300-350 350-400 400-450 450-500 Frequency: 24 40 33 28 30 22 16 7 Find the average expenditure (in Rs.) per household.

Total number of students of a school in different years is shown in the following table: Year, No. of Students 1996 1998 2000 2002 2004, 400 550 450 600 650 Represent the above data by a pictograph. Prepare a pictograph of students using one symbol an icon of a student to represent 100 students and answer the following questions: How many symbols represent total number of students in the year 2002? How many symbols represent total number of students in the year 1998? Prepare another pictograph of students using any other symbol each representing 50 students. Which pictograph do you find more informative?

Draw a histogram for the frequency table made for the data in Question 3, and answer the following questions.(i) Which group has the maximum number of workers?(ii) How many workers earn Rs 850 and more?(iii) How many workers earn less than Rs 850?

In an experiment on photoelectric effect, the stopping potential is measured for monochromatic light beams corresponding to different wavelength. The data collected are as follows: wavelength (nm): 350 400 450 500 550 stopping potential (V): 1.45 1.00 0.66 0.38 0.16 Plot the stopping potential against inverse of wavelength on a graph paper and find (a) the Planck constant, (b) the work function of the emitter and (c) the threshold wavelength .

The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure (in rupees) (x_i) Frequency (f_i) 100-150 24 150-200 40 200-250 33 250-300 28 300-350 30 350-450 22 400-450 16 450-500 7 Find the average expenditure (in rupees) per household.

The median of the following data is 525. Find the missing frequency, if it is given that there are 100 observations in the data: Class interval Frequency Class interval Frequency 0 100 2 500 600 20 100 200 5 600 700 f_2 200 300 f_1 700 800 9 300 400 12 800 900 7 400 500 17 900 1000 4

The following table gives the weights (in grams) of 30 boxes of fruits : {:("Weight (in grams)",350,425,500,375,475,400,450),("Number of boxes",5,3,6,4,2,3,7):} Find the mean and the median. Using empirical formula, calculate its mode.

The weekly wages (in Rs.) of 30 workers in a factory are give: 830,835,890,810,835,836,869,845,898,890, 820,860,832,833,855,845,804,808,812,,840,885,835,835,836,878,840,868,890,806,840 Mark a frequency table with intervals as 800-810, 810-820 and so on, using tally marks. Also, draw a histogram and answer the following questions: Which group has the maximum number of workers? How many workers earn Rs. 850 and more? How many workers earn less than Rs. 850?

the daily minimum temperatures in degrees Celsius recorded in a certain Arctic region are as follows: -12. 5 ,-10. 8 ,-18. 6 ,-8. 4 ,-10. 8 ,-4. 2 ,-4. 8 ,-6. 7 ,-13. 2 , -11. 8 ,-2. 3 , 1.2 , 2.6 ,0,-2. 4 ,0, 3.2 , 2.7 , 3.4 ,0,-2. 4 ,-2. 4 ,0, 3. 2 , 2.7 , 3.4 ,0,-2. 4 ,-5. 8 ,-8. 9 ,-14 ,6,-12. 3 ,-11. 5 ,-7. 8 ,-2. 9 Represent them as frequency distribution table taking -19. 9\ to-15 as the first class interval.