business statistics

2. The following table gives the daily wages distribution of the employees of a company Daily wages( Tk) Below 200 Below 350 Below 500 Below 650 Below 800 No of employees 10 18 22 25 Calculate mean and median wage 3. The mean and the SD of a sample of size 10 were found to be 9 & 5 respectively, Later on, an additional observation became available. This was 15,0 and was included in the original sample. Find the mean and the standard deviation of the Il observations, 4. For a distribution, Mean-25, coefficient of variation-40% and coefficient of skewness -0.02. Find the mode and median 5, The competitors in a beauty contrast are ranked by three judges in the following First Judges 2 Second Judges S 2 Third Judges 5 which pair of judges have the nearest approach to common tastes in a beauty contrast 6. The sum of 20 observations is 300, its sum of squares is 5000 Find variance and co-efficient of variation gied the