STATISTICS

Question 1

Basically the average and represented by the symbol x bar

Answer 1

MEAN

Question 2

How to calculate the Mean?

Answer 2

Take the sum of the set of numbers divided by to the numbers that are in the data set

Question 3

Basically the middle number or simply the middle number of data set?

Answer 3

MEDIAN

Question 4

How to find Median?

Answer 4

Eliminate the first and the last number then the next numbers until left with the middle number

Question 5

What to do if you come accross a situation where you dont have one number in the middle (example 2 numbers)?

Answer 5

Take the average of those two middle numbers. Add them up then divide by 2.

Question 6

Simply the most frequent number in the data set?

Answer 6

MODE

Question 7

A data set with two modes is called what?

Answer 7

Binomial data set

Question 8

What do you call a data set with only one mode?

Answer 8

Unimodal

Question 9

The difference between the highest number and the lowest number

Answer 9

RANGE

Question 10

What is the first step to find the mean, median, mode, and range?

Answer 10

Arrange the numbers in increasing orders

Question 11

A statistical term that describes a division of observations into four defined intervals based on the values of the data and how they compare to the entire set of observations.

Answer 11

Quartile

Question 12

The difference between the upper and lower quartile values in a set of data. (Q3 - Q1)

Answer 12

Interquartile range

Question 13

It is commonly referred to as IQR and is used as a measure of spread and variability in a data set.

Answer 13

Interquartile range

Question 14

Median of the lower half of the data set

Answer 14

1st Quartile (Q1)

Question 15

Basically the median of the entire data set

Answer 15

2nd Quartile (Q2)

Question 16

Median of the upper half of the data set

Answer 16

3rd Quartile (Q3)

Question 17

A single data point that goes far outside the average value of a group of statistics

Answer 17

Outlier

Question 18

Also known as box plot. Summarizing a set of data.

Answer 18

Box and Whisker Plot

Question 19

Shows how the data is distributed and it also shows any outliers.

Answer 19

Box and Whisker Plot

Question 20

Useful way to compare different sets of dara as you can draw more than one boxplot per graph.

Answer 20

Box and Whisker Plot

Question 21

Measurement of the distortion of symmetrical distribution or asymmetry in a data set. Demonstrate bell curve.

Answer 21

Skewness

Question 22

If you have a data that is perfectly symmetrical, the mean is gonna be _______ to the median

Answer 22

Equal

Question 23

The box and whisker plot is evenly distributed

Answer 23

Represents a symmetric distribution

Question 24

If the tail of the graph is in the right side. Sample mean will be in the right. Mean will be greater than the median. Some referred as a Positive Skew.

Answer 24

Skewed to the right

Question 25

The box and whisker plot : right side of the box is longer than the left side. Even if the box is equal, the right side line longer than the left side. Q3 - Q2 > Q2 - Q1

Answer 25

Skewed to the right

Question 26

If the tail of the graph is in the left side. Sample mean will be in the left of the median. Mean is less than the median. Also known as Negative Skew.

Answer 26

Skewed to the left

Question 27

Q2 will be closer to Q3 in the box plot. Left side line is longer than the right side. Q2 - Q1 > Q3 - Q2

Answer 27

Skewed to the left

Question 28

The Mode in this is the number with the most dots. Visually groups the number of data points in a data set based on the value of each point.

Answer 28

Dot Plot

Question 29

Gives a visual depiction of the distribution of the data, similar to a histogram or probability distribution function.

Answer 29

Dot Plot

Question 30

A type of plot with 2 columns ( left=stem, right=leaf) and may have decimal values. Technique used to classify either discrete or continuous variables.

Answer 30

Stem and Leaf Plot

Question 31

2 columns where the left is a value with an accompanying frequency on the right. A “t-chart” or two-column table which outlines the various possible outcomes and the associated frequencies observed in a sample.

Answer 31

Frequency table

Question 32

Similar to bar graph yet bars are interconnecting. The height of a rectangle (the vertical axis) represents the distribution frequency of a variable (the amount, or how often that variable appears).

Answer 32

Histogram

Question 33

frequency divided by n

Answer 33

Relative frequency