ECAT Pre General Science Statistics Online Test With Answers

image
image
image

ECAT Pre General Science Statistics Online Test

Sr. # Questions Answers Choice
1 Which of the following is not a hardware Compiler CPU Chip Memory unit
2 A computer can execute a flow chart a program an algorithm all of the above
3 A computer stores instructions in English language Octal Number System Binary Number System Decimal Number System
4 Computer memory Performs all calculations Receives input data is extremely limited is better than human memory
5 A collection of eight bits is called Byte Word Record File
6 The CPU of a digital computer consists of ALU Main memory Control unit All of the above
7 Computer means Complete Processing Data Calculate
8 The main function of a computer is Data storage Speed Data Processing None of these
9 The unit of frequency is Hertz Bytes Mega bytes None of these
10 The number of pulses generated is one second is called _______ Accuracy Frequency Hertz Data
11 __________ is a measure of number of vibration per second Frequency Speed Hertz Bytes
12 Number of instructions processed in one second is called ________ of computer Accuracy Speed Frequency None of these
13 A combination of characters, numbers and symbols for specific purpose is called Bytes Data MB None of these
14 1 GHz equals to 1024 Hz 10<sup>4</sup>MHz 10<sup>2</sup>MHz 1024 MHz
15 Exponential smoothing requires Past values of the time series Current values of the time series Both past and current values of the time series Estimation of a time trend regression
16 Time series analysis is used to analyze data Over different time periods Across different companies Across different companies and across different time periods That are qualitative
17 Which one of the following is an example of seasonal variation An increase in consumption of electricity in summer A steel strike, delaying production for a week A continually increasing demand for smaller automobiles None of these
18 A fire in a factory delaying production for 3 weeks is an example of Seasonal variation Secular Trend Cyclical fluctuations Irregular Movements
19 The cyclical fluctuations are Long term oscillation Short term oscillation Secular oscillation None of these
20 The seasonal variations are Long term movements Short term movements Cyclical fluctuations Secular trend
21 In data of birth's and death'd and epidemics as a result of advancement in medical sciences, the secular trend is usually a downward tendency zero tendency an upward tendency None of these
22 A ___________ is a line or curve that shows the general tendency of a time series. Historigram Seasonal variation Secular Trend None of these
23 A set od data depending on the time is called Historigram Histogram Time series None of these
24 A time series of annual data can contain which of the following components Secular Trend Cyclical fluctuation Seasonal variation (A) and (B) only
25 The graph of the time series is called Histogram Pie chart Bar diagram Historigram
26 Which of the following would likely be a seasonal component of a time series Holidays Population growth Law suits None of these
27 Which of the following would likely be a trend component of a time series Population growth Law suits Holidays Recessions
28 The _______ is an irregular component of variation in a time series Signal Noise Response None of these
29 The ______ is a systematic component of variation in a time series. Historigram Signal Noise Time period
30 In the study of two attributes, (B) = (A<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">β) + (</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">αB)</span> (AB) + (A<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">β)</span> (B) + (<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">β)</span> (AB) + (<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">α</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">β)</span>
Download This Set
×