XI_Maths_Statistics_5 Online Test

A student represents his scores in Mathematics, Statistics and Economics in a pie chart. The central angle for Mathematics is 120o. He scored 96 in Statistics and 84 in Economics. The central angle for Statistics is:
The mean daily profit made by shopkeeper in a month of 30 days was Rs.350. If the mean profit for the first fifteen days was Rs.275, then mean profit for the last fifteen days would be:
If X and Y are two sets, then X ( (X (Y)c equals.
None of these
For obtaining secondary data one may rely on:
Direct personal interview
Indirect personal interview through a team of investigators appointed for the purpose
Personal scrutiny of periodicals
Questionnaires filled by a group of enumerators appointed for the purpose
If a set of data has zero as an observation, then which one of the following is NOT an appropriate measure of central tendency?
Arithmetic mean
Geometric mean
The total nice production is 64 million tons is island A and 256 million tons in island B. To present this information in the form of circle diagrams, the ratio of the radii of circles is:
1: 4
1: 3
1: 3.5
1: 2
The following questions consist of two statements. One labelled as the Assertion (A) and the other as the Reason (R). You are to examine these two statements carefully and answer the questions using the coeds given below: Codes: Assertion (A): In its market survey, a company dealing in ready-made shirts, tries to determine the mean of the data collected for ascertaining the size requirements of maximum number of users. Reason (R): Model is the value, which occurs with greatest frequency.
Both A and R true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true, R is false
A is false, R is true
The standard error of the mean is equal to :
The population standard deviation divided by the square root of n
The population variance divided by the square root of n
The population standard deviation divided by the sample size n
The population variance divided by the sample size n-1
If a sample of n=100 is taken from a population whose standard deviation is equal to 100, then the standard error of the mean equals:
When you show that the variation of the sample mean from the population mean decreases when the sample size increases, you are demonstrating the property of:

This test consist of 10 questions.Students should ideally take 10 minutes to complete the test. This test is useful for those students who are preparing for IIT JEE, AIEEE or any other engineering entrance test. This test cosist of questions from Statistics which, in general, is focused in AIEEE and IIT JEE. Last year 3 questions was asked from this chapter in AIEEE. In Statistics, deviations and variance are key topics and mostly application based questions are asked.

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