# Get help with descriptive statistics problems

Recent questions in Descriptive Statistics
Damien Horton 2022-07-16

### What causes the pulsation of a cepheid-type variable star?

Jayvion Caldwell 2022-07-16

### Graph median, mode, rangeThe question is:A scientist collects data. He determines both the mean of the data and the median of the data are equal to 7 and the data are symmetrical about this value. He starts to create a bar graph shown, but does not finish the graph.If the range of the data is 8 and the maximum value of the data is 11, then how many data points fall above the value 7?The answer is 14, but I don't know how this is the answer.

Aleah Booth 2022-07-16

### What is the the value of z for which the area under the normal curve to the right of z is equal to 0.76?

Alexandra Richardson 2022-07-16

### What is the z-score of sample X, if

Emmanuel Pace 2022-07-16

### What is the z-score of sample X, if ?

Luciano Webster 2022-07-16

### Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If $P\left(-e, what is e?

Logan Wyatt 2022-07-16

### Find a meta-analysis published in a journal; two good sources are the Review of Educational Research and Psychological Bulletin. What conclusions were drawn from the meta-analysis? How were studies selected for the analysis? How was the concept of effect size discussed in the meta-analysis?

gaiaecologicaq2 2022-07-16

vangstosiis 2022-07-16

### How are z-scores used in the standardization of test scores?

Roselyn Daniel 2022-07-16

### What is the z-score of X, if n = 204, $\mu =15$, SD =1, and X =35?

suchonosdy 2022-07-16

### What is the z-score of sample X, if ?

Riya Hansen 2022-07-15

### How do you ddd: $3{a}^{2}+8a-6$ and $4{a}^{2}-9a+11$?

kislotd 2022-07-15

### What measure of effect size would most likely be used in each of the following meta-analyses?a. A meta-analysis on the effect of the drug ibuprofen on the frequency of individuals contracting kidney disease.b. A meta-analysis of whether excluding parasites from a population affects mean growth rate.c. A meta-analysis of the association between human height and life spand. A meta-analysis comparing the survival of parasitized and unparasitized birds.e. A meta-analysis comparing the difference in body size of males and females across species.

Keenan Santos 2022-07-14

### $X$ is a discrete uniform distribution on $1,2,\dots ,n$. I know that the median is $\frac{n+1}{2}$ for odd $n$. I need to find median when $n$ is even. Would it be $\frac{n}{2}$ or $\frac{n}{2}+1$, whichever is greater?Also, is every point mode as PDF has highest values there? So there are $n$ modes - $1,2,\dots ,n$?

kominis3q 2022-07-14

### What are the two types of hypotheses used in a hypothesis test? How are they related?

Lorena Beard 2022-07-13

### I'm curious what the phrase "on average" means. Here is an example:On average, $30\mathrm{%}$ were further than ___ kilometers away when they had their accident.Is $30\mathrm{%}$ a z-score or is it a mean? Transport Canada was investigating accident records to find out how far from their residence people were to when they got into a traffic accident. They took the population of accident records from Ontario and measured the distance the drivers were from home when they had their accident in kilometers (km). The distribution of distances was normally shaped, with $µ=30$ kilometers and $\sigma =8.0$ kilometers.

Willow Pratt 2022-07-13