Deck 1: Why Is My Evil Lecturer Forcing Me to Learn Statistic

Question 1

The two most important sources of systematic variation in RCTs are?

A)Counterbalancing and randomization
B)Systematic and unsystematic variation
C)Practice effects and boredom effects
D)Frequency distributions and positive skews

Answer 1

C

Question 2

The median is always?

A)The middle score when results are ranked in order of magnitude
B)The most frequently occurring value in a data set
C)The same as the mean
D)Never the same as the mode

Answer 2

A

Question 3

What does this symbol mean? √

A)Divide by
B)2+2=4
C)Square root
D)Equal to

Answer 3

C

Question 4

Which of the following is an example of a quantitative research method?

A)Systematic reviews
B)Blog research
C)Visual methodologies
D)Statistical and correlational analysis

Question 5

Two distributions (D₁ and D₂)are plotted onto the same graph.D₁ is right skewed,D₂ is left skewed.The mean of D₁ is lower than D₂.Which of the following statements is incorrect?

A)The mean of D₂ is higher than the median of D₂.
B)The mean of D₂ is lower than the median of D₁.
C)The median of D₁ is the same as the mean of D₂.
D)All of the above

Question 6

SPSS is a computer software program used for..?

A)Doing your work for you
B)Analysing data sets
C)Checking football scores
D)Voting on The X Factor

Question 7

Negative reinforcement is a type of?

A)Manipulation
B)Ignorance
C)Refusal
D)Variation

Question 8

You begin a study with primary school children.You show them a box which contains 3 yellow,2 black,4 white and 3 clear buttons.Two buttons are taken one after the other at random from the box.What is the probability that both buttons are black?

A)1/6
B)1/16
C)1/60
D)1/66

Question 9

Which of the following is an effective data collection tool in educational research?

A)Baseline surveys
B)Acting
C)Visiting a solicitor
D)Brushing your teeth

Question 10

The random allocation to groups of participants in an RCT occurs?

A)Before assessment of eligibility and recruitment
B)After assessment of eligibility and recruitment but before implementation of the intervention
C)After both assessment of eligibility and recruitment and implementation of the intervention
D)At any point

Question 11

Your seminar tutor congratulates all students for working hard on their statistics homework.This is an example of?

A)No reinforcement
B)Negative reinforcement
C)Positive reinforcement
D)Data collection

Question 12

What is the answer to the following equation? √1999 =

A)44.71
B)43.07
C)45.98
D)44.00

Question 13

A repeated-measures design uses?

A)Different subject groups throughout
B)The same subject group throughout
C)Mixed subject groups throughout
D)No subject groups

Question 14

A sample of size n is used to estimate the confidence interval for a proportion.Upon review,you consider the standard deviation too large.If you want to reduce your standard deviation so that it is a tenth (1/10)of the original size,what size sample do you need?

A)10n
B)100n
C)1000n
D)10,000n

Question 15

Which of the following is a common example of self-reporting measurement error?

A)Lying on a questionnaire
B)Calculator malfunction
C)Miscalibrated scales
D)Dud batteries in a stopwatch

Question 16

An independent variable is:

A)A variable thought to predict an outcome variable
B)An outcome
C)Synonymous with a dependent variable
D)A variable thought to be the cause of some effect

Question 17

Analysing data is which stage in the five-stage model of research?

A)1^st
B)2^nd
C)4^th
D)5^th

Question 18

A randomized controlled trial (RCT)is often used to test?

A)Efficacy of various types of intervention within a patient population
B)Popularity of types of music
C)Methods of data collection
D)Versions of SPSS software

Question 19

You ask a participant in a study to roll a die,and to keep rolling until they roll either a 5 or a 6.What is the variance of the distribution of the number of rolls required?

A)6
B)3
C)1/3
D)1/18

Question 20

Which of the following is a brief definition of 'contiguity'?

A)Cause and effect must occur close together in time,
B)The effect will occur before the cause,
C)Cause and effect can occur randomly,
D)Effect never determines cause,

Question 21

A data set is usually collated in?

A)Tabular form
B)Histograms
C)Pie charts
D)A Word document

Question 22

Which of the following are true statements?
I.All bell-shaped distributions are symmetric.
II.Bar charts are useful to describe quantitative data.
III.Cumulative frequency plots are useful to describe quantitative data.

A)I only
B)I and II only
C)I and III only
D)II and III only

Question 23

You ask a class of 15 students to tell you the number of people who follow them on Twitter.They give their answers as 10,27,145,70,8,23,2,0,66,201,12,5,9,34,20.

-Calculate the median number of followers.

A)0
B)12
C)20
D)145

Question 24

You ask a class of 15 students to tell you the number of people who follow them on Twitter.They give their answers as 10,27,145,70,8,23,2,0,66,201,12,5,9,34,20.

-Calculate the mean number of followers to 2 decimal places.

A)13.42
B)42.13
C)24.31
D)34.12

Question 25

How is a null hypothesis denoted?

A)H₀
B)H₁
C)H₂
D)H₃