Introduction to statistics

Question 1

Correlation and regression, index numbers, time series analysis.

Answer 1

Finance

Question 2

Hypothesis testing, chi square tests, non parametric statistics.

Answer 2

Personel

Question 3

Hypothesis testing, estimation, analysis of variance, time series analysis.

Answer 3

Operating management

Question 4

The science of collecting describing and interpreting data.

Answer 4

Statistics

Question 5

Collection, presentation, and description of sample data.

Answer 5

Descriptive Statistics

Question 6

Making decisions and drawing conclusions about the population.

Answer 6

Inferential Statistics

Question 7

Estimate the population mean weight using the sample mean weight.

Answer 7

Estimation

Question 8

Test the claim that the population mean weight is 70kg.

Answer 8

Hypothesis Testing

Question 9

Is the process of drawing conclusions or making decisions about a population based on sample result

Answer 9

Inferences

Question 10

Are collected specifically for the analysis desired.

Answer 10

Primary data

Question 11

Have already been compiled and are available for statistical analysis.

Answer 11

Secondary data

Question 12

The collection of data that are relevant to the problem being studied is commonly the most difficult expensive, and time-consuming part of the entire research project.
-Are usually obtained by counting or measuring items.

Answer 12

Statistical Data

Question 13

Is an item of interest that can take on many different numerical values.

Answer 13

Variable

Question 14

Has a fixed numerical value

Answer 14

Constant

Question 15

Data are measurements that each fail into one several categories.

Answer 15

Qualitative

Question 16

Data are observations that are measured on a numerical scale

Answer 16

Quantitative

Question 17

If it takes the form of a word with two options

Answer 17

Dichotomic

Question 18

If it takes the form of a word with more than two options

Answer 18

Polynomic

Question 19

A quantitative variable that can assume a countable number of values.

Answer 19

Discrete Variable

Question 20

A quantitative variable that can assume an uncountable number of values.

Answer 20

Continuous Variable

Question 21

Consists of categories in each of which the number of respective observations is recorded. The categories are in no logical order and have no particular relationship.

Answer 21

Nominal

Question 22

Contains more information consists of distinct categories in which order is implied.

Answer 22

Ordinal

Question 23

Is a set of numerical measurements in which the distance between numbers is of a known, constant size.

Answer 23

Interval

Question 24

A collection of numerical measurements where the distance between numbers is of a known constant size, in addition, there is a nonarbitrary zero point.

Answer 24

Ratio.

Question 25

A collection of set, of individuals or objects event whose properties are to be analyzed.

Answer 25

Population

Question 25

A collection of set, of individuals or objects event whose properties are to be analyzed.

Answer 25

Population

Question 26

A subset of population.

Answer 26

Sample

Question 27

Characteristics about each individual element of a population or sample

Answer 27

Variable

Question 28

The value of the variable associated with one element of a population or sample.

Answer 28

Data(singular)

Question 29

The set of values collected for the variable from each of the elements belonging to the sample.

Answer 29

Data(plural)

Question 30

A planned activity whose results yield a set of data.

Answer 30

Experiment

Question 31

a numerical value summarizing all the data of an entire population

Answer 31

Parameter

Question 32

A numerical value summarizing the sample data.

Answer 32

Statistics

Question 33

Are the data or scores that are arranged in a frequency distribution

Answer 33

Grouped Data

Question 34

Is the arrangement of scores according to category of classes including the frequency.

Answer 34

Frequency distribution

Question 35

Is the number of observations falling in a category

Answer 35

Frequency

Question 36

The values which determines the upper and lower limits if a class.

Answer 36

Class limit

Question 37

A way to plot data where the data is split into stem(the largest digit ) and leaves(the smallest digits)

Answer 37

Stem and leaf plot

Question 38

Distribution gives the total number of values that falls below the upper boundary of each class.

Answer 38

Cumulative frequency

Question 39

is given by the midpoint of the upper limit of one class and the lower limit of the next class.

Answer 39

class boundary