STATISTICS CLUB QUIZ!!!

Question 1

What’s the difference between a parameter and statistic?

Accepted Answer

A parameter measures population, and a statistic is a measure for a sample

Question 2

Estimate the correlation coefficient (r) from the following scatterplot

Accepted Answer

0.9

Question 3

According to the 68–95–99.7 rule, what percentage of data lies between 0 and +1 standard deviation from the mean?

Accepted Answer

34%

Question 4

Statistics are often used as summary results

Accepted Answer

True

Question 5

What is the difference between Permutation and Combination?

Accepted Answer

In permutation order matters; in combination order does not matter

Question 6

Which of the following is a continuous variable?

Accepted Answer

Amount of Rainfall

Question 7

Which of these are methods of random sampling

Accepted Answer

Systematic Random sampling, Cluster sampling, Simple Random Sampling, Stratified sampling

Question 8

Define Median

Accepted Answer

The middle number(s) in an increasing list of numbers

Question 9

If you have 52 cards. What is the probability 2 picked cards will be aces? Assume cards are not replaced.

Accepted Answer

0.0045 --> (4/52)(3/51)

Question 10

A population is a collection of all individuals, objects, or measurements of interest.

Accepted Answer

True

Question 11

Which of the following tests is used to determine whether a linear relationship exists for the data below

Accepted Answer

t-test for slope of regression

Question 12

In which of the following distribution shapes is the mean greater than the median?

Accepted Answer

Skewed right

Question 13

If you choose an answer to this question at random, what is the chance you will be correct?

Accepted Answer

25%

Question 14

What is another name for box and whisker plots?

Accepted Answer

boxplots

Question 15

You can only determine cause and effect using experiments

Accepted Answer

True

Question 16

SCHOOLHOUSE TRIVIA: What year did Schoolhouse.world Start?

Accepted Answer

2020

Question 17

According to the 68–95–99.7 rule, what percentage of data lies more than 3 standard deviations away from the mean?

Accepted Answer

0.3%

Question 18

Determine the relationship between mean and median in the graph below

Accepted Answer

mean > median

Question 19

What’s the probability of rolling three dice and all of them landing on 6?

Accepted Answer

1/216

Question 20

What is the difference between discrete and continuous variables

Accepted Answer

Discrete means exact figures

Question 21

When the correlation coefficient, r = 1...

Accepted Answer

there is a strong positive relationship between two variables

Question 22

A binomial distribution has p=0.2 and n=100. What is the mean and standard (respectively)?

Accepted Answer

20,4

Question 23

Just for fun - How many people are needed in a room for there to be a 50% chance that two of them share a birthday?

Accepted Answer

23

Question 24

In which distribution is the median equal to the mean?

Accepted Answer

Symmetric

Question 25

Define Probability

Accepted Answer

How likely something is to happen

Question 26

If the p-value is less than the significance level (e.g., 0.05 or 0.01), you would:

Accepted Answer

Reject the null hypothesis

Question 27

What is the median in the boxplot below?

Accepted Answer

0.48

Question 28

In this cumulative proportion graph below, what is the median:

Accepted Answer

17

Question 29

A fair dice is tossed, what is the probability of rolling more than a 4? (Simplify your fraction)

Accepted Answer

1/2

Question 30

On bar charts, the x-axis is often labelled with categorical variables (cars, color, book titles etc.)

Accepted Answer

True

Question 31

Which of the following is a discrete variable?

Accepted Answer

Number of Favorite Colors

Question 32

What kind of graph is this?

Accepted Answer

Histogram

Question 33

What does Law of Large Numbers say?

Accepted Answer

As a sample size grows, mean gets closer to that of the whole population

Question 34

Symmetric Distribution and Normal distribution mean the same thing

Accepted Answer

True

Question 35

Failing to reject the null hypothesis when it is false is:

Accepted Answer

Type II Error

STATISTICS CLUB QUIZ!!!

Questions 35

STATISTICS CLUB QUIZ!!!

Questions 35