MNPSC: GS Paper-II(e). Statistical analysis, graphs and diagrams

The type of sampling in which population is divided into groups or classes is called

Consider the number of personnel in the years 2007 and 2012 and answer the question below: 2007 2012 (a) Data Entry Operators 18 32 (b) Programmers 21 36 (c) Analysts 15 31 (d) Sales Managers 3 3 Which category has shown the largest increase in relative strength?

Heidke Skill Score and Hansen and Kuiper Score are methods adopted for

In an office, the distribution of work hours is as shown in the following table No. of staff Members | Work hours 5 | 0-19 1 | 20-24 25 | 25-29 40 | 30-34 15 | 35-39 8 | 40-45 Consider the following inferences drawn from the table: 1. The average number of hours worked by a staff member is about 30 2. The percentage of those who worked 3.5 or more hours is less than 25 3. At least 5 staff members worked more than 44 hours Which of these inferences is/are valid?