Quiz Math

Question 1

is a way to organize and display data in order to show how often each value or range of values occurs.

Answer 1

Frequency distribution

Question 2

It helps in summarizing the data and identifying patterns. There are different types of data, and the way you create a frequency distribution depends on the nature of the data.

Answer 2

Frequency distribution

Question 3

is a table that shows classes or intervals of data with a count of the number in each class. The frequency f of a class is the number of data points in the class.

Answer 3

Frequency distribution

Question 4

distribution is used when dealing with categorical data (non-numeric data with categories).

Answer 4

Categorical frequency distribution

Question 5

is used when the data set is relatively small, and the individual values are distinct

Answer 5

Ungrouped frequency distribution

Question 6

is used when the data set is large and the values can be grouped into intervals or classes.

Answer 6

Grouped frequency distribution

Question 7

The smallest data value can be included in the class

Answer 7

Lower class limit

Question 8

The Largest data value that can be included in the class.

Answer 8

Upper class limit

Question 9

are used to separate the classes so that there are no gaps in the frequency distribution

Answer 9

Class boundaries

Question 10

The difference between the consecutive lower-class limits

Answer 10

Class width

Question 11

class are increasing order, is the sum of the frequencies for that class and all previous classes.

Answer 11

Cumulative frequency

Question 12

is a formula used to determine the number of bins or classes for a histogram in statistical data analysis. It provides an estimate of the optimal number of bins based on the number of observations in a dataset. The formula is named after the statistician Herbert Sturges who proposed it in 1926.

Answer 12

Sturge’s rule

Question 13

class is the portion or percentage of the data that falls in that class.

Answer 13

Relative frequency

Question 14

is the sum of the frequency for that class and all the previous classes.

Answer 14

Cumulative frequency

Question 15

is the running total of the frequencies in a frequency distribution. It shows the total number of observations that are less than or equal to a particular class or interval. To determine, you start with the frequency of the first class and add the frequencies as you move through the classes.

Answer 15

Cumulative frequency

Question 16

is a graphical representation of a frequency distribution. It displays the frequencies of different classes or intervals by using bars. Each bar’s height corresponds to the frequency of the class it represents.

Answer 16

Frequency Histogram

Question 17

is a graphical representation of a frequency distribution. It is similar to a frequency histogram but uses line segments to connect the midpoints of each class interval, forming a polygon. This method helps emphasize the distribution of values over the entire range.

Answer 17

Frequency polygon

Question 18

is a line graph that emphasizes the continuous change in frequencies.

Answer 18

Frequency polygon

Question 19

is a graphical representation of data that displays the proportion or percentage of observations within each class or interval. Unlike a regular frequency histogram, where the vertical axis represents the absolute frequencies the vertical axis represents the relative frequencies. is similar to that of a regular histogram, but the frequencies are expressed as proportions or percentages.

Answer 19

Relative frequency histogram

Question 20

has the same shape and the same horizontal scale as the corresponding frequency histogram.

Answer 20

Relative frequency histogram

Question 21

is the difference between the maximum and minimum values in the dataset and gives an indication of how spread out the values are

Answer 21

Range

Question 22

define the range of values included in each class interval.

Answer 22

Class limit

Question 23

are points that separate one class interval from the next in a grouped frequency distribution. They are located midway between the upper limit of one class and the lower limit of the next class.

Answer 23

Class boundaries

Question 24

help avoid confusion about which values belong to which class.

Answer 24

Class boundaries

Question 25

also known as the class mid value or class middle, involves finding the middle point within each class interval.

Answer 25

Class midpoint