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Analyzing categorical data

### Is the mode the measure of central tendency that is best used with a skewed distribution?

Analyzing categorical data

### For each of the following variables, indicate whether they are categorical or numerical. Also, write down what type of graph can be drawn for each. a) Position of a university staff members. b) Weight of participants. C Air temperature on the Celsius scale D) The daily number of code lines written by a programmer

Analyzing categorical data

### Why is hair color classified as categorical data?

Analyzing categorical data

### Qualitative data that cannot be ranked is called categorical, nominal 1. True 2. False

Analyzing categorical data

### Which statement best characterizes the definitions of categorical and quantitative data? Quantitative data consist of numbers, whereas categorical data consist of names and labels that are not numeric. Quantitative data consist of numbers representing measurements or counts, whereas categorical data consist of names or labels Quantitative data consist of values that can be arranged in order, whereas categorical data consist of values that cannot be arranged in order. Quantitative data have an uncountable number of possible values, whereas categorical data have a countable number of possible values.

Analyzing categorical data

### Let g be an element of a group G. If |G| is finite and even, show that g \neq 1 in G exists such that g2 = 1

Analyzing categorical data

### The equation a=50h+50 represents the amount a that an air-conditioning repair company charges for h hours of labour. Make a table and sketch a graph of the equation

Analyzing categorical data

### Find the mean, median, mode, and range for each data set given. a. 7, 12, 1, 7, 6, 5, 11 b. 85, 105, 95, 90, 115 c. 10, 14, 16, 16, 8, 9, 11, 12, 3 d. 10, 8, 7, 5, 9, 10, 7 e. 45, 50, 40, 35, 75 f. 15, 11, 11, 16, 16, 9

Analyzing categorical data

### Tuddenham and Snyder obtained the following results for 66 California boys at ages 6 and 18 (the scatter diagram is football-shaped): average height at 6 ≈ 3 feet 10 inches, SD ≈ 1.7 inches average height at 18 ≈ 5 feet 10 inches, SD ≈ 2.5 inches, r≈0.80 a) Find the r.m.s. error for the regression prediction of height at 18 from height at 6. b) Find the r.m.s. error for the regression prediction of height at 6 from height at 18.

Analyzing categorical data

### For the chi-square tests in the analysis of categorical data, the rejection region 1.is always located in the lower tail of the distribution. 2.is always equally split in the two tails of the distribution. 3.is always located in the upper tail of the distribution. 4.depends on the probability of a type II error.

Analyzing categorical data

### Let N(x) be the statement “x has visited North India,” where the domain consists of the students in your section. Express each of these quantifications in English. $$\displaystyle{a}{)}∃{x}{N}{\left({x}\right)},{b}{)}∀{x}{N}{\left({x}\right)},{c}{)}¬∃{x}{N}{\left({x}\right)},{d}{)}∃{x}¬{N}{\left({x}\right)},{e}{)}¬∀{x}{N}{\left({x}\right)},{f}{)}∀{x}¬{N}{\left({x}\right)}$$

Analyzing categorical data

### Prove the following statement: if x is irrational and y is irrational then x+y is irrational

Analyzing categorical data

### All groups of order 14

Analyzing categorical data

### Indicate whether the following variables are categorical or numerical? If they are numerical, state whether they are discrete or continuous. (a) The price of randomly selected sweaters in a department store. (b) The first three digits of the social security number of randomly selected US residents. The eye color of randomly selected Columbia students. (c) The number of views of randomly selected YouTube videos. The speed of randomly selected cars on Broadway.

Analyzing categorical data

### What is cross tabulation?

Analyzing categorical data

### Explain the differences between categorical and qualitative data. Provide examples.

Analyzing categorical data

### Given the groups R∗ and Z, let G = R∗×Z. Define a binary operation ◦ on G by (a,m)◦(b,n) = (ab,m + n). Show that G is a group under this operation.

Analyzing categorical data

### Select the best suitable answer. If none of the choices represents a correct answer, select “Other” and write your own answer. The school cafeteria collects data on students’ juice box selections. This is an example of A numerical, ordinal data. B numerical, nominal data. C categorical, ordinal data. D categorical, nominal data.

Analyzing categorical data

### The Bureau of Transportation Statistics Omnibus Household Survey is conducted annually and serves as an information source for the U.S. Department of Transportation. In one part of the survey the person being interviewed was asked to respond to the following statement: "Drivers of motor vehicles should be allowed to talk on a hand-held cell phone while driving." Possible responses were strongly agree, some what agree, some what disagree, and strongly disagree. Forty-four respondents said that they strongly agree with this statement, 120 said that they some what agree, 165 said they some what disagree, and 755 said they strongly disagree with this statement. Do the responses for this statement provide categorical or quantitative data?

Analyzing categorical data

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