If all the topics in syllabus are clear in your mind then you do not need to attend classes of Statistics like i am giving. so i am assuming that you are expert in the following topics
1. General ideas of sampling and surveys.Bias: how it arises and is avoided.Including knowledge of the terms: random
sample, stratified random sample, quota sample, systematic sample.
2. The nature of a variable. Including knowledge of the terms: discrete, continuous, quantitative and qualitative.
3. Classification, tabulation and interpretation of data. Pictorial representation of data; the purpose and use of various forms, their advantages and disadvantages. Including pictograms, pie charts, bar charts, sectional and percentage bar charts, dual bar charts, change charts.
4. Frequency distributions; frequency polygons and histograms. Including class boundaries and mid-points, class intervals.
5. Cumulative frequency distributions, curves (ogives) and polygons.
6. Measures of central tendency and their appropriate use; mode and modal class, median and mean. Measures of dispersion and their appropriate use; range, interquartile range, variance and standard deviation. Calculation of the mean, the variance and the standard deviation from a set of numbers, a frequency distribution and a grouped frequency
distribution, including the use of an assumed mean. Estimation of the median, quartiles and percentiles from a set of numbers, a cumulative frequency curve or polygon and by linear interpolation from a cumulative frequency
table. The effect on mean and standard deviation of adding a constant to each observation and of
multiplying each observation by a constant. Linear transformation of data to a given mean
and standard deviation.
7. Index numbers, composite index numbers, price relatives, crude and standardised rates.
8. Moving averages. Including knowledge of the terms: time series, trend, seasonal variation, cyclic variation. Centering will be expected, where appropriate.
9. Scatter diagrams; lines of best fit. Including the method of semi-averages for fitting a straight line; the derivation of the
equation of the fitted straight line in the form y = mx + c.
10. Elementary ideas of probability. Including the treatment of mutually exclusive and independent events.
11. Simple probability and frequency distributions for a discrete variable. Expectation. Including expected profit and loss in simple games; idea of a fair game.
If you have clear concepts of all then you need only to practice past papers of Abdul Waris. If all the concepts are not clear then attend classes.
Sir Abdul Basit Mianoor
Experienced and Renowned teacher of O levels at Orient Collegiate.
Economics, Business Studies, Maths, Stats and Accounts
Hurry up call now 0321-3890420 or vist www.facebook.com/abdulbasitmianoor
G-1 Al-Rehman square Opp.Sharfabad Govt school, Near Abid Mirath Kabab House Karachi
thank you very much sir!